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| author | Divy Le Ray <divy@chelsio.com> | 2008-09-04 22:34:13 -0700 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-09-24 18:58:56 -0400 |
| commit | 004f23b9d3874efc81d2d1cf18fd0fe48dc2f26f (patch) | |
| tree | 1c4295a92a5b632b23e0e68f70d08f8ed4aa71e2 /drivers/net/cxgb3 | |
| parent | b73724921d906d1642f9f6d054079c6b095903fe (diff) | |
| download | linux-3.10-004f23b9d3874efc81d2d1cf18fd0fe48dc2f26f.tar.gz linux-3.10-004f23b9d3874efc81d2d1cf18fd0fe48dc2f26f.tar.bz2 linux-3.10-004f23b9d3874efc81d2d1cf18fd0fe48dc2f26f.zip | |
cxgb3 - remove duplicate tests in lro
The generic lro code checks TCP flags/options.
Remove duplicate tests done in the driver.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/cxgb3')
| -rw-r--r-- | drivers/net/cxgb3/sge.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 6990c0ddc85..89efd04be4e 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -1937,38 +1937,6 @@ static inline int lro_frame_ok(const struct cpl_rx_pkt *p) eh->h_proto == htons(ETH_P_IP) && ih->ihl == (sizeof(*ih) >> 2); } -#define TCP_FLAG_MASK (TCP_FLAG_CWR | TCP_FLAG_ECE | TCP_FLAG_URG |\ - TCP_FLAG_ACK | TCP_FLAG_PSH | TCP_FLAG_RST |\ - TCP_FLAG_SYN | TCP_FLAG_FIN) -#define TSTAMP_WORD ((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |\ - (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP) - -/** - * lro_segment_ok - check if a TCP segment is eligible for LRO - * @tcph: the TCP header of the packet - * - * Returns true if a TCP packet is eligible for LRO. This requires that - * the packet have only the ACK flag set and no TCP options besides - * time stamps. - */ -static inline int lro_segment_ok(const struct tcphdr *tcph) -{ - int optlen; - - if (unlikely((tcp_flag_word(tcph) & TCP_FLAG_MASK) != TCP_FLAG_ACK)) - return 0; - - optlen = (tcph->doff << 2) - sizeof(*tcph); - if (optlen) { - const u32 *opt = (const u32 *)(tcph + 1); - - if (optlen != TCPOLEN_TSTAMP_ALIGNED || - *opt != htonl(TSTAMP_WORD) || !opt[2]) - return 0; - } - return 1; -} - static int t3_get_lro_header(void **eh, void **iph, void **tcph, u64 *hdr_flags, void *priv) { @@ -1981,9 +1949,6 @@ static int t3_get_lro_header(void **eh, void **iph, void **tcph, *iph = (struct iphdr *)((struct ethhdr *)*eh + 1); *tcph = (struct tcphdr *)((struct iphdr *)*iph + 1); - if (!lro_segment_ok(*tcph)) - return -1; - *hdr_flags = LRO_IPV4 | LRO_TCP; return 0; } |