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RDMA/nes: Check for sequence number wrap-around 

check_seq() was not checking if the seq#s have wrapped.  Fix it.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Faisal Latif 2009-04-27 13:38:31 -07:00 committed by Roland Dreier
parent 53094c388f
commit c11470f9f4
1 changed files with 2 additions and 1 deletions
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3
drivers/infiniband/hw/nes/nes_cm.c
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@ -56,6 +56,7 @@
#include <net/neighbour.h>
#include <net/route.h>
#include <net/ip_fib.h>
#include <net/tcp.h>
#include "nes.h"
@ -1514,7 +1515,7 @@ static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph,
rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
if (ack_seq != loc_seq_num)
err = 1;
else if ((seq + rcv_wnd) < rcv_nxt)
else if (!between(seq, rcv_nxt, (rcv_nxt+rcv_wnd)))
err = 1;
if (err) {
nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "