提交 ef9e62c2 编写于 作者: S Sowmini Varadhan 提交者: David S. Miller

RDS: recv path gets the conn_path from rds_incoming for MP capable transports

Transports that are t_mp_capable should set the rds_conn_path
on which the datagram was recived in the ->i_conn_path field
of struct rds_incoming.
Signed-off-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 7e8f4413
......@@ -231,6 +231,7 @@ struct rds_incoming {
atomic_t i_refcount;
struct list_head i_item;
struct rds_connection *i_conn;
struct rds_conn_path *i_conn_path;
struct rds_header i_hdr;
unsigned long i_rx_jiffies;
__be32 i_saddr;
......
......@@ -38,7 +38,6 @@
#include <linux/time.h>
#include <linux/rds.h>
#include "rds_single_path.h"
#include "rds.h"
void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
......@@ -165,13 +164,18 @@ void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
struct rds_sock *rs = NULL;
struct sock *sk;
unsigned long flags;
struct rds_conn_path *cp;
inc->i_conn = conn;
inc->i_rx_jiffies = jiffies;
if (conn->c_trans->t_mp_capable)
cp = inc->i_conn_path;
else
cp = &conn->c_path[0];
rdsdebug("conn %p next %llu inc %p seq %llu len %u sport %u dport %u "
"flags 0x%x rx_jiffies %lu\n", conn,
(unsigned long long)conn->c_next_rx_seq,
(unsigned long long)cp->cp_next_rx_seq,
inc,
(unsigned long long)be64_to_cpu(inc->i_hdr.h_sequence),
be32_to_cpu(inc->i_hdr.h_len),
......@@ -200,12 +204,12 @@ void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
* XXX we could spend more on the wire to get more robust failure
* detection, arguably worth it to avoid data corruption.
*/
if (be64_to_cpu(inc->i_hdr.h_sequence) < conn->c_next_rx_seq &&
if (be64_to_cpu(inc->i_hdr.h_sequence) < cp->cp_next_rx_seq &&
(inc->i_hdr.h_flags & RDS_FLAG_RETRANSMITTED)) {
rds_stats_inc(s_recv_drop_old_seq);
goto out;
}
conn->c_next_rx_seq = be64_to_cpu(inc->i_hdr.h_sequence) + 1;
cp->cp_next_rx_seq = be64_to_cpu(inc->i_hdr.h_sequence) + 1;
if (rds_sysctl_ping_enable && inc->i_hdr.h_dport == 0) {
rds_stats_inc(s_recv_ping);
......
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