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jme: Tuning rxsum function 

1. Use more efficient way to determine flag status.
2. Hardware dose not mark fragment bit against IPv6 packets,
   print TCP/UDP checksum warning message for IPv4 packets
   only.

Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guo-Fu Tseng 2009-07-06 04:41:22 +00:00 committed by David S. Miller
parent d1dfa1d1de
commit ce7d70af2c
1 changed files with 13 additions and 13 deletions
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26
drivers/net/jme.c
View File

@ -880,27 +880,27 @@ jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
return false;
if (unlikely(!(flags & RXWBFLAG_MF) &&
(flags & RXWBFLAG_TCPON) && !(flags & RXWBFLAG_TCPCS))) {
msg_rx_err(jme, "TCP Checksum error.\n");
goto out_sumerr;
if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
== RXWBFLAG_TCPON)) {
if (flags & RXWBFLAG_IPV4)
msg_rx_err(jme, "TCP Checksum error\n");
return false;
}
if (unlikely(!(flags & RXWBFLAG_MF) &&
(flags & RXWBFLAG_UDPON) && !(flags & RXWBFLAG_UDPCS))) {
msg_rx_err(jme, "UDP Checksum error.\n");
goto out_sumerr;
if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
== RXWBFLAG_UDPON)) {
if (flags & RXWBFLAG_IPV4)
msg_rx_err(jme, "UDP Checksum error.\n");
return false;
}
if (unlikely((flags & RXWBFLAG_IPV4) && !(flags & RXWBFLAG_IPCS))) {
if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
== RXWBFLAG_IPV4)) {
msg_rx_err(jme, "IPv4 Checksum error.\n");
goto out_sumerr;
return false;
}
return true;
out_sumerr:
return false;
}
static void