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| author | Vijay Subramanian <subramanian.vijay@gmail.com> | 2011-12-20 13:23:24 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-21 01:03:23 -0500 |
| commit | ab56222a32b9dbaae19c1d37f07b0ac4fc3c27ec (patch) | |
| tree | ce5eff7879a1d80c419835171de13e52c24afdfb /net/ipv4 | |
| parent | 08f4fc9da9a04d59f5c937e06e375158abb68206 (diff) | |
| download | linux-ab56222a32b9dbaae19c1d37f07b0ac4fc3c27ec.tar.gz linux-ab56222a32b9dbaae19c1d37f07b0ac4fc3c27ec.tar.bz2 linux-ab56222a32b9dbaae19c1d37f07b0ac4fc3c27ec.zip | |
tcp: Replace constants with #define macros
to record the state of SACK/FACK and DSACK for better readability and maintenance.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/syncookies.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 90f6544c13e2..51fdbb490437 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -245,7 +245,7 @@ bool cookie_check_timestamp(struct tcp_options_received *tcp_opt, bool *ecn_ok) if (!sysctl_tcp_timestamps) return false; - tcp_opt->sack_ok = (options >> 4) & 0x1; + tcp_opt->sack_ok = (options & (1 << 4)) ? TCP_SACK_SEEN : 0; *ecn_ok = (options >> 5) & 1; if (*ecn_ok && !sysctl_tcp_ecn) return false; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index f131d92d25ee..2877c3e09587 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -865,13 +865,13 @@ static void tcp_disable_fack(struct tcp_sock *tp) /* RFC3517 uses different metric in lost marker => reset on change */ if (tcp_is_fack(tp)) tp->lost_skb_hint = NULL; - tp->rx_opt.sack_ok &= ~2; + tp->rx_opt.sack_ok &= ~TCP_FACK_ENABLED; } /* Take a notice that peer is sending D-SACKs */ static void tcp_dsack_seen(struct tcp_sock *tp) { - tp->rx_opt.sack_ok |= 4; + tp->rx_opt.sack_ok |= TCP_DSACK_SEEN; } /* Initialize metrics on socket. */ @@ -3878,7 +3878,7 @@ void tcp_parse_options(const struct sk_buff *skb, struct tcp_options_received *o case TCPOPT_SACK_PERM: if (opsize == TCPOLEN_SACK_PERM && th->syn && !estab && sysctl_tcp_sack) { - opt_rx->sack_ok = 1; + opt_rx->sack_ok = TCP_SACK_SEEN; tcp_sack_reset(opt_rx); } break; |