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| author | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2007-11-24 22:06:52 -0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:54:58 -0800 |
| commit | 95b21d7e9d099f1cffca08e40f292d6658a88b3c (patch) | |
| tree | 23f30c58c1bbe6344c6077552b4220a442b94624 /net/dccp/ccids | |
| parent | 3deeadd74bbf916b502d307222833ffcf68db557 (diff) | |
| download | blackbird-op-linux-95b21d7e9d099f1cffca08e40f292d6658a88b3c.tar.gz blackbird-op-linux-95b21d7e9d099f1cffca08e40f292d6658a88b3c.zip | |
[CCID2]: Replace pipe assignment-function with assignment
The function ccid2_change_pipe only does an assignment. This patch simplifies the code by
replacing the function with the assignment it performs.
Furthermore, the type of pipe is promoted from `signed' to unsigned (increasing the range).
As a result, a BUG_ON test for negative values now becomes obsolete (for safety not removed,
but replaced with a less annoying `DCCP_BUG').
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ccids')
| -rw-r--r-- | net/dccp/ccids/ccid2.c | 16 | ||||
| -rw-r--r-- | net/dccp/ccids/ccid2.h | 3 |
2 files changed, 8 insertions, 11 deletions
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c index 747fa1c4e42e..237007bb55a8 100644 --- a/net/dccp/ccids/ccid2.c +++ b/net/dccp/ccids/ccid2.c @@ -171,11 +171,6 @@ static void ccid2_change_srtt(struct ccid2_hc_tx_sock *hctx, long val) hctx->ccid2hctx_srtt = val; } -static void ccid2_change_pipe(struct ccid2_hc_tx_sock *hctx, long val) -{ - hctx->ccid2hctx_pipe = val; -} - static void ccid2_start_rto_timer(struct sock *sk); static void ccid2_hc_tx_rto_expire(unsigned long data) @@ -205,11 +200,11 @@ static void ccid2_hc_tx_rto_expire(unsigned long data) ccid2_start_rto_timer(sk); /* adjust pipe, cwnd etc */ - ccid2_change_pipe(hctx, 0); hctx->ccid2hctx_ssthresh = hctx->ccid2hctx_cwnd / 2; if (hctx->ccid2hctx_ssthresh < 2) hctx->ccid2hctx_ssthresh = 2; hctx->ccid2hctx_cwnd = 1; + hctx->ccid2hctx_pipe = 0; /* clear state about stuff we sent */ hctx->ccid2hctx_seqt = hctx->ccid2hctx_seqh; @@ -248,8 +243,7 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len) BUG_ON(!hctx->ccid2hctx_sendwait); hctx->ccid2hctx_sendwait = 0; - ccid2_change_pipe(hctx, hctx->ccid2hctx_pipe + 1); - BUG_ON(hctx->ccid2hctx_pipe < 0); + hctx->ccid2hctx_pipe++; /* There is an issue. What if another packet is sent between * packet_send() and packet_sent(). Then the sequence number would be @@ -519,8 +513,10 @@ static void ccid2_hc_tx_dec_pipe(struct sock *sk) { struct ccid2_hc_tx_sock *hctx = ccid2_hc_tx_sk(sk); - ccid2_change_pipe(hctx, hctx->ccid2hctx_pipe-1); - BUG_ON(hctx->ccid2hctx_pipe < 0); + if (hctx->ccid2hctx_pipe == 0) + DCCP_BUG("pipe == 0"); + else + hctx->ccid2hctx_pipe--; if (hctx->ccid2hctx_pipe == 0) ccid2_hc_tx_kill_rto_timer(sk); diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h index b72e9556a155..bc659f00cb96 100644 --- a/net/dccp/ccids/ccid2.h +++ b/net/dccp/ccids/ccid2.h @@ -42,6 +42,7 @@ struct ccid2_seq { /** struct ccid2_hc_tx_sock - CCID2 TX half connection * + * @ccid2hctx_{cwnd,ssthresh,pipe}: as per RFC 4341, section 5 * @ccid2hctx_ssacks - ACKs recv in slow start * @ccid2hctx_acks - ACKS recv in AI phase * @ccid2hctx_lastrtt -time RTT was last measured @@ -51,9 +52,9 @@ struct ccid2_seq { struct ccid2_hc_tx_sock { u32 ccid2hctx_cwnd; u32 ccid2hctx_ssthresh; + u32 ccid2hctx_pipe; int ccid2hctx_ssacks; int ccid2hctx_acks; - int ccid2hctx_pipe; struct ccid2_seq *ccid2hctx_seqbuf[CCID2_SEQBUF_MAX]; int ccid2hctx_seqbufc; struct ccid2_seq *ccid2hctx_seqh; |
