diff options
| author | Andrea Bittau <a.bittau@cs.ucl.ac.uk> | 2006-09-20 00:04:54 +0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-23 02:19:07 +0400 |
| commit | 23d06e3b986677ec57007a24891fa9deb09ac973 (patch) | |
| tree | f77c083196ebd447fdf5905a984d2235695c62e3 /net/dccp/ackvec.c | |
| parent | a1e59abf824969554b90facd44a4ab16e265afa4 (diff) | |
| download | linux-23d06e3b986677ec57007a24891fa9deb09ac973.tar.xz | |
[DCCP] ACKVEC: fix ackvector length calculation
Fix ackvector length calculation upon receiving an "ack-of-ack". This
patch avoids the ackvector from growing too large which causes it to
not be inserted into packets.
Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ackvec.c')
| -rw-r--r-- | net/dccp/ackvec.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c index 8c211c58893b..8dab723cc704 100644 --- a/net/dccp/ackvec.c +++ b/net/dccp/ackvec.c @@ -353,11 +353,13 @@ static void dccp_ackvec_throw_record(struct dccp_ackvec *av, { struct dccp_ackvec_record *next; - av->dccpav_buf_tail = avr->dccpavr_ack_ptr - 1; - if (av->dccpav_buf_tail == 0) - av->dccpav_buf_tail = DCCP_MAX_ACKVEC_LEN - 1; - - av->dccpav_vec_len -= avr->dccpavr_sent_len; + /* sort out vector length */ + if (av->dccpav_buf_head <= avr->dccpavr_ack_ptr) + av->dccpav_vec_len = avr->dccpavr_ack_ptr - av->dccpav_buf_head; + else + av->dccpav_vec_len = DCCP_MAX_ACKVEC_LEN - 1 + - av->dccpav_buf_head + + avr->dccpavr_ack_ptr; /* free records */ list_for_each_entry_safe_from(avr, next, &av->dccpav_records, |