- 02 9月, 2015 5 次提交
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由 Tom Herbert 提交于
Add an input flag to flow dissector on rather dissection should be attempted on a first fragment. Also add key_control flags to indicate that a packet is a fragment or first fragment. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
The flags argument will allow control of the dissection process (for instance whether to parse beyond L3). Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Instead of returning immediately (on a parsing failure for instance) we jump to cleanup code. This always sets protocol values in key_control (even on a failure there is still valid information in the key_tags that was set before the problem was hit). Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Create __get_hash_from_flowi6 and __get_hash_from_flowi4 to get the flow keys and hash based on flowi structures. These are called by __skb_get_hash_flowi6 and __skb_get_hash_flowi4. Also, created get_hash_from_flowi6 and get_hash_from_flowi4 which can be called when just the hash value for a flowi is needed. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Move __skb_set_sw_hash to skbuff.h and add __skb_set_hash which is a common method (between __skb_set_sw_hash and skb_set_hash) to set the hash in an skbuff. Also, move skb_clear_hash to be closer to __skb_set_hash. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 9月, 2015 2 次提交
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由 Pravin B Shelar 提交于
opts_size is only written and never read. Following patch removes this unused variable. Signed-off-by: NPravin B Shelar <pshelar@nicira.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Daniel Borkmann 提交于
Currently, the following case doesn't use DCTCP, even if it should: A responder has f.e. Cubic as system wide default, but for a specific route to the initiating host, DCTCP is being set in RTAX_CC_ALGO. The initiating host then uses DCTCP as congestion control, but since the initiator sets ECT(0), tcp_ecn_create_request() doesn't set ecn_ok, and we have to fall back to Reno after 3WHS completes. We were thinking on how to solve this in a minimal, non-intrusive way without bloating tcp_ecn_create_request() needlessly: lets cache the CA ecn option flag in RTAX_FEATURES. In other words, when ECT(0) is set on the SYN packet, set ecn_ok=1 iff route RTAX_FEATURES contains the unexposed (internal-only) DST_FEATURE_ECN_CA. This allows to only do a single metric feature lookup inside tcp_ecn_create_request(). Joint work with Florian Westphal. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 8月, 2015 2 次提交
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由 Jiri Benc 提交于
There's currently nothing preventing directing packets with IPv6 encapsulation data to IPv4 tunnels (and vice versa). If this happens, IPv6 addresses are incorrectly interpreted as IPv4 ones. Track whether the given ip_tunnel_key contains IPv4 or IPv6 data. Store this in ip_tunnel_info. Reject packets at appropriate places if they are supposed to be encapsulated into an incompatible protocol. Signed-off-by: NJiri Benc <jbenc@redhat.com> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Acked-by: NThomas Graf <tgraf@suug.ch> Acked-by: NPravin B Shelar <pshelar@nicira.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David Ahern 提交于
A few useful tracepoints developing VRF driver. Signed-off-by: NDavid Ahern <dsa@cumulusnetworks.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 8月, 2015 1 次提交
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由 Nikolay Aleksandrov 提交于
Make sure we catch future netpoll_send_udp users who use it without disabling irqs and also as a hint for poll_controller users. Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 28 8月, 2015 4 次提交
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由 Phil Sutter 提交于
Printing a warning in alloc_netdev_mqs() if tx_queue_len is zero and IFF_NO_QUEUE not set is not appropriate since drivers may use one of the alloc_netdev* macros instead of alloc_etherdev*, thereby not intentionally leaving tx_queue_len uninitialized. Instead check here if tx_queue_len is zero and set IFF_NO_QUEUE, so the value of tx_queue_len can be ignored in net/sched_generic.c. Fixes: 906470c1 ("net: warn if drivers set tx_queue_len = 0") Signed-off-by: NPhil Sutter <phil@nwl.cc> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jean Sacren 提交于
The symbol '__sk_reclaim' is not present in the current tree. Apparently '__sk_reclaim' was meant to be '__sk_mem_reclaim', so fix it with the right symbol name for the kernel doc. Signed-off-by: NJean Sacren <sakiwit@gmail.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jiri Pirko 提交于
Add info that is passed along with NETDEV_CHANGEUPPER event. Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Daniel Borkmann 提交于
For classifiers getting invoked via tc_classify(), we always need an extra function call into tc_classify_compat(), as both are being exported as symbols and tc_classify() itself doesn't do much except handling of reclassifications when tp->classify() returned with TC_ACT_RECLASSIFY. CBQ and ATM are the only qdiscs that directly call into tc_classify_compat(), all others use tc_classify(). When tc actions are being configured out in the kernel, tc_classify() effectively does nothing besides delegating. We could spare this layer and consolidate both functions. pktgen on single CPU constantly pushing skbs directly into the netif_receive_skb() path with a dummy classifier on ingress qdisc attached, improves slightly from 22.3Mpps to 23.1Mpps. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 27 8月, 2015 1 次提交
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由 Alexei Starovoitov 提交于
Make sure to indicate to tunnel driver that key.tun_id is set, otherwise gre won't recognize the metadata. Fixes: d3aa45ce ("bpf: add helpers to access tunnel metadata") Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 8月, 2015 2 次提交
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由 WANG Cong 提交于
This patch fixes the following crash: general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.2.0-rc7+ #166 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 task: ffff88010656d280 ti: ffff880106570000 task.ti: ffff880106570000 RIP: 0010:[<ffffffff8182f91b>] [<ffffffff8182f91b>] dst_destroy+0xa6/0xef RSP: 0018:ffff880107603e38 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff8800d225a000 RCX: ffffffff82250fd0 RDX: 0000000000000001 RSI: ffffffff82250fd0 RDI: 6b6b6b6b6b6b6b6b RBP: ffff880107603e58 R08: 0000000000000001 R09: 0000000000000001 R10: 000000000000b530 R11: ffff880107609000 R12: 0000000000000000 R13: ffffffff82343c40 R14: 0000000000000000 R15: ffffffff8182fb4f FS: 0000000000000000(0000) GS:ffff880107600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007fcabd9d3000 CR3: 00000000d7279000 CR4: 00000000000006e0 Stack: ffffffff82250fd0 ffff8801077d6f00 ffffffff82253c40 ffff8800d225a000 ffff880107603e68 ffffffff8182fb5d ffff880107603f08 ffffffff810d795e ffffffff810d7648 ffff880106574000 ffff88010656d280 ffff88010656d280 Call Trace: <IRQ> [<ffffffff8182fb5d>] dst_destroy_rcu+0xe/0x1d [<ffffffff810d795e>] rcu_process_callbacks+0x618/0x7eb [<ffffffff810d7648>] ? rcu_process_callbacks+0x302/0x7eb [<ffffffff8182fb4f>] ? dst_gc_task+0x1eb/0x1eb [<ffffffff8107e11b>] __do_softirq+0x178/0x39f [<ffffffff8107e52e>] irq_exit+0x41/0x95 [<ffffffff81a4f215>] smp_apic_timer_interrupt+0x34/0x40 [<ffffffff81a4d5cd>] apic_timer_interrupt+0x6d/0x80 <EOI> [<ffffffff8100b968>] ? default_idle+0x21/0x32 [<ffffffff8100b966>] ? default_idle+0x1f/0x32 [<ffffffff8100bf19>] arch_cpu_idle+0xf/0x11 [<ffffffff810b0bc7>] default_idle_call+0x1f/0x21 [<ffffffff810b0dce>] cpu_startup_entry+0x1ad/0x273 [<ffffffff8102fe67>] start_secondary+0x135/0x156 dst is freed right before lwtstate_put(), this is not correct... Fixes: 61adedf3 ("route: move lwtunnel state to dst_entry") Acked-by: NJiri Benc <jbenc@redhat.com> Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com> Signed-off-by: NCong Wang <cwang@twopensource.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Masanari Iida 提交于
This patch fix following warnings. .//net/core/skbuff.c:407: warning: No description found for parameter 'len' .//net/core/skbuff.c:407: warning: Excess function parameter 'length' description in '__netdev_alloc_skb' .//net/core/skbuff.c:476: warning: No description found for parameter 'len' .//net/core/skbuff.c:476: warning: Excess function parameter 'length' description in '__napi_alloc_skb' Signed-off-by: NMasanari Iida <standby24x7@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 8月, 2015 1 次提交
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由 Tom Herbert 提交于
Add cfg and family arguments to lwt build state functions. cfg is a void pointer and will either be a pointer to a fib_config or fib6_config structure. The family parameter indicates which one (either AF_INET or AF_INET6). LWT encpasulation implementation may use the fib configuration to build the LWT state. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 22 8月, 2015 1 次提交
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由 Michal Hocko 提交于
Commit c48a11c7 ("netvm: propagate page->pfmemalloc to skb") added checks for page->pfmemalloc to __skb_fill_page_desc(): if (page->pfmemalloc && !page->mapping) skb->pfmemalloc = true; It assumes page->mapping == NULL implies that page->pfmemalloc can be trusted. However, __delete_from_page_cache() can set set page->mapping to NULL and leave page->index value alone. Due to being in union, a non-zero page->index will be interpreted as true page->pfmemalloc. So the assumption is invalid if the networking code can see such a page. And it seems it can. We have encountered this with a NFS over loopback setup when such a page is attached to a new skbuf. There is no copying going on in this case so the page confuses __skb_fill_page_desc which interprets the index as pfmemalloc flag and the network stack drops packets that have been allocated using the reserves unless they are to be queued on sockets handling the swapping which is the case here and that leads to hangs when the nfs client waits for a response from the server which has been dropped and thus never arrive. The struct page is already heavily packed so rather than finding another hole to put it in, let's do a trick instead. We can reuse the index again but define it to an impossible value (-1UL). This is the page index so it should never see the value that large. Replace all direct users of page->pfmemalloc by page_is_pfmemalloc which will hide this nastiness from unspoiled eyes. The information will get lost if somebody wants to use page->index obviously but that was the case before and the original code expected that the information should be persisted somewhere else if that is really needed (e.g. what SLAB and SLUB do). [akpm@linux-foundation.org: fix blooper in slub] Fixes: c48a11c7 ("netvm: propagate page->pfmemalloc to skb") Signed-off-by: NMichal Hocko <mhocko@suse.com> Debugged-by: NVlastimil Babka <vbabka@suse.com> Debugged-by: NJiri Bohac <jbohac@suse.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David Miller <davem@davemloft.net> Acked-by: NMel Gorman <mgorman@suse.de> Cc: <stable@vger.kernel.org> [3.6+] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 8月, 2015 2 次提交
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由 Jiri Benc 提交于
Currently, the lwtunnel state resides in per-protocol data. This is a problem if we encapsulate ipv6 traffic in an ipv4 tunnel (or vice versa). The xmit function of the tunnel does not know whether the packet has been routed to it by ipv4 or ipv6, yet it needs the lwtstate data. Moving the lwtstate data to dst_entry makes such inter-protocol tunneling possible. As a bonus, this brings a nice diffstat. Signed-off-by: NJiri Benc <jbenc@redhat.com> Acked-by: NRoopa Prabhu <roopa@cumulusnetworks.com> Acked-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jiri Benc 提交于
Add the IPv6 addresses as an union with IPv4 ones. When using IPv4, the newly introduced padding after the IPv4 addresses needs to be zeroed out. Signed-off-by: NJiri Benc <jbenc@redhat.com> Acked-by: NThomas Graf <tgraf@suug.ch> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 8月, 2015 1 次提交
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由 Phil Sutter 提交于
Due to the introduction of IFF_NO_QUEUE, there is a better way for drivers to indicate that no qdisc should be attached by default. Though, the old convention can't be dropped since ignoring that setting would break drivers still using it. Instead, add a warning so out-of-tree driver maintainers get a chance to adjust their code before we finally get rid of any special handling of tx_queue_len == 0. Signed-off-by: NPhil Sutter <phil@nwl.cc> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 8月, 2015 4 次提交
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由 Tom Herbert 提交于
This function updates a checksum field value and skb->csum based on a value which is the difference between the old and new checksum. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
inet_proto_csum_replace4,2,16 take a pseudohdr argument which indicates the checksum field carries a pseudo header. This argument should be a boolean instead of an int. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
This patch adds the capability to redirect dst input in the same way that dst output is redirected by LWT. Also, save the original dst.input and and dst.out when setting up lwtunnel redirection. These can be called by the client as a pass- through. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 14 8月, 2015 2 次提交
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由 Sasha Levin 提交于
Commit 10e4ea75 ("net: Fix race condition in store_rps_map") has moved the manipulation of the rps_needed jump label under a spinlock. Since changing the state of a jump label may sleep this is incorrect and causes warnings during runtime. Make rps_map_lock a mutex to allow sleeping under it. Fixes: 10e4ea75 ("net: Fix race condition in store_rps_map") Signed-off-by: NSasha Levin <sasha.levin@oracle.com> Acked-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Linus Lüssing 提交于
The recent refactoring of the IGMP and MLD parsing code into ipv6_mc_check_mld() / ip_mc_check_igmp() introduced a potential crash / BUG() invocation for bridges: I wrongly assumed that skb_get() could be used as a simple reference counter for an skb which is not the case. skb_get() bears additional semantics, a user count. This leads to a BUG() invocation in pskb_expand_head() / kernel panic if pskb_may_pull() is called on an skb with a user count greater than one - unfortunately the refactoring did just that. Fixing this by removing the skb_get() call and changing the API: The caller of ipv6_mc_check_mld() / ip_mc_check_igmp() now needs to additionally check whether the returned skb_trimmed is a clone. Fixes: 9afd85c9 ("net: Export IGMP/MLD message validation code") Reported-by: NBrenden Blanco <bblanco@plumgrid.com> Signed-off-by: NLinus Lüssing <linus.luessing@c0d3.blue> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 8月, 2015 2 次提交
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由 Eric Dumazet 提交于
reqsk_queue_destroy() and reqsk_queue_unlink() should use del_timer_sync() instead of del_timer() before calling reqsk_put(), otherwise we could free a req still used by another cpu. But before doing so, reqsk_queue_destroy() must release syn_wait_lock spinlock or risk a dead lock, as reqsk_timer_handler() might need to take this same spinlock from reqsk_queue_unlink() (called from inet_csk_reqsk_queue_drop()) Fixes: fa76ce73 ("inet: get rid of central tcp/dccp listener timer") Signed-off-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rick Jones 提交于
Add an explicit neighbour table overflow message (ratelimited) and statistic to make diagnosing neighbour table overflows tractable in the wild. Diagnosing a neighbour table overflow can be quite difficult in the wild because there is no explicit dmesg logged. Callers to neighbour code seem to use net_dbg_ratelimit when the neighbour call fails which means the "base message" is not emitted and the callback suppressed messages from the ratelimiting can end-up juxtaposed with unrelated messages. Further, a forced garbage collection will increment a stat on each call whether it was successful in freeing-up a table entry or not, so that statistic is only a hint. So, add a net_info_ratelimited message and explicit statistic to the neighbour code. Signed-off-by: NRick Jones <rick.jones2@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 8月, 2015 1 次提交
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由 Tom Herbert 提交于
There is a race condition in store_rps_map that allows jump label count in rps_needed to go below zero. This can happen when concurrently attempting to set and a clear map. Scenario: 1. rps_needed count is zero 2. New map is assigned by setting thread, but rps_needed count _not_ yet incremented (rps_needed count still zero) 2. Map is cleared by second thread, old_map set to that just assigned 3. Second thread performs static_key_slow_dec, rps_needed count now goes negative Fix is to increment or decrement rps_needed under the spinlock. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 07 8月, 2015 2 次提交
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由 Oleg Nesterov 提交于
Commit 1fbe4b46 "net: pktgen: kill the Wait for kthread_stop code in pktgen_thread_worker()" removed (in particular) the final __set_current_state(TASK_RUNNING) and I didn't notice the previous set_current_state(TASK_INTERRUPTIBLE). This triggers the warning in __might_sleep() after return. Afaics, we can simply remove both set_current_state()'s, and we could do this a long ago right after ef87979c "pktgen: better scheduler friendliness" which changed pktgen_thread_worker() to use wait_event_interruptible_timeout(). Reported-by: NHuang Ying <ying.huang@intel.com> Signed-off-by: NOleg Nesterov <oleg@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Herbert Xu 提交于
The commit 738ac1eb ("net: Clone skb before setting peeked flag") introduced a use-after-free bug in skb_recv_datagram. This is because skb_set_peeked may create a new skb and free the existing one. As it stands the caller will continue to use the old freed skb. This patch fixes it by making skb_set_peeked return the new skb (or the old one if unchanged). Fixes: 738ac1eb ("net: Clone skb before setting peeked flag") Reported-by: NBrenden Blanco <bblanco@plumgrid.com> Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Tested-by: NBrenden Blanco <bblanco@plumgrid.com> Reviewed-by: NKonstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 8月, 2015 1 次提交
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由 Robert Shearman 提交于
In the locally-generated packet path skb->protocol may not be set and this is required for the lwtunnel encap in order to get the lwtstate. This would otherwise have been set by ip_output or ip6_output so set skb->protocol prior to calling the lwtunnel encap function. Additionally set skb->dev in case it is needed further down the transmit path. Signed-off-by: NRobert Shearman <rshearma@brocade.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 8月, 2015 1 次提交
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由 Daniel Borkmann 提交于
Add skb->hash to the __sk_buff offset map, so it can be accessed from an eBPF program. We currently already do this for classic BPF filters, but not yet on eBPF, it might be useful as a demuxer in combination with helpers like bpf_clone_redirect(), toy example: __section("cls-lb") int ingress_main(struct __sk_buff *skb) { unsigned int which = 3 + (skb->hash & 7); /* bpf_skb_store_bytes(skb, ...); */ /* bpf_l{3,4}_csum_replace(skb, ...); */ bpf_clone_redirect(skb, which, 0); return -1; } I was thinking whether to add skb_get_hash(), but then concluded the raw skb->hash seems fine in this case: we can directly access the hash w/o extra eBPF helper function call, it's filled out by many NICs on ingress, and in case the entropy level would not be sufficient, people can still implement their own specific sw fallback hash mix anyway. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 8月, 2015 2 次提交
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由 Tom Herbert 提交于
Add skb_get_hash_flowi6 and skb_get_hash_flowi4 which derive an sk_buff hash from flowi6 and flowi4 structures respectively. These functions can be called when creating a packet in the output path where the new sk_buff does not yet contain a fully formed packet that is parsable by flow dissector. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Alexei Starovoitov 提交于
Introduce helpers to let eBPF programs attached to TC manipulate tunnel metadata: bpf_skb_[gs]et_tunnel_key(skb, key, size, flags) skb: pointer to skb key: pointer to 'struct bpf_tunnel_key' size: size of 'struct bpf_tunnel_key' flags: room for future extensions First eBPF program that uses these helpers will allocate per_cpu metadata_dst structures that will be used on TX. On RX metadata_dst is allocated by tunnel driver. Typical usage for TX: struct bpf_tunnel_key tkey; ... populate tkey ... bpf_skb_set_tunnel_key(skb, &tkey, sizeof(tkey), 0); bpf_clone_redirect(skb, vxlan_dev_ifindex, 0); RX: struct bpf_tunnel_key tkey = {}; bpf_skb_get_tunnel_key(skb, &tkey, sizeof(tkey), 0); ... lookup or redirect based on tkey ... 'struct bpf_tunnel_key' will be extended in the future by adding elements to the end and the 'size' argument will indicate which fields are populated, thereby keeping backwards compatibility. The 'flags' argument may be used as well when the 'size' is not enough or to indicate completely different layout of bpf_tunnel_key. Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com> Acked-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 31 7月, 2015 1 次提交
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由 Sowmini Varadhan 提交于
The newsk returned by sk_clone_lock should hold a get_net() reference if, and only if, the parent is not a kernel socket (making this similar to sk_alloc()). E.g,. for the SYN_RECV path, tcp_v4_syn_recv_sock->..inet_csk_clone_lock sets up the syn_recv newsk from sk_clone_lock. When the parent (listen) socket is a kernel socket (defined in sk_alloc() as having sk_net_refcnt == 0), then the newsk should also have a 0 sk_net_refcnt and should not hold a get_net() reference. Fixes: 26abe143 ("net: Modify sk_alloc to not reference count the netns of kernel sockets.") Acked-by: NEric Dumazet <edumazet@google.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: NSowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 7月, 2015 2 次提交
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由 Bogdan Hamciuc 提交于
Field pktgen_dev.allocated_skbs had been written to, but never read from. The number of allocated skbs can be deduced anyway, from the total number of sent packets and the 'clone_skb' param. Signed-off-by: NBogdan Hamciuc <bogdan.hamciuc@freescale.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Bogdan Hamciuc 提交于
Allocate enough space so as not to force the outgoing net device to do skb_realloc_headroom(). Signed-off-by: NBogdan Hamciuc <bogdan.hamciuc@freescale.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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