提交 cfbbeabc 编写于 作者: G Gerrit Renker 提交者: David S. Miller

[CCID2]: Fix sequence number arithmetic/comparisons

This replaces use of normal subtraction with modulo-48 subtraction.
Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: NIan McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 3de5489f
......@@ -24,9 +24,6 @@
/*
* This implementation should follow RFC 4341
*
* BUGS:
* - sequence number wrapping
*/
#include "../ccid.h"
......@@ -619,9 +616,8 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* go through this ack vector */
while (veclen--) {
const u8 rl = *vector & DCCP_ACKVEC_LEN_MASK;
u64 ackno_end_rl;
u64 ackno_end_rl = SUB48(ackno, rl);
dccp_set_seqno(&ackno_end_rl, ackno - rl);
ccid2_pr_debug("ackvec start:%llu end:%llu\n",
(unsigned long long)ackno,
(unsigned long long)ackno_end_rl);
......@@ -671,8 +667,7 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (done)
break;
dccp_set_seqno(&ackno, ackno_end_rl - 1);
ackno = SUB48(ackno_end_rl, 1);
vector++;
}
if (done)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册