| commit | 6ad373c3572967a204e22fdd0ca36b7d12762913 | |
| author | Sepherosa Ziehau <sephe@dragonflybsd.org> | |
| Tue, 26 Jun 2007 15:10:23 +0000 (26 15:10 +0000) | ||
| committer | Sepherosa Ziehau <sephe@dragonflybsd.org> | |
| Tue, 26 Jun 2007 15:10:23 +0000 (26 15:10 +0000) | ||
| tree | f1efe756535e09eb2f47ead35967fe43f69ed420 | treesnapshot (tar.gz zip) |
| parent | 2978547343332eb74ec7051ad3ad0cdd89c16d08 | commitdiff |
If RX csum calculation with pseudo header is enabled, bge(4)'s will
miscalculate csum of frames carrying UDP datagrams. If UDP datagrams
are not fragmented by IP, then the rate of miscalculation is low, but
if UDP datagrams are fragmented by IP, then most of the frames will be
delivered to the upper layer with wrong hardware csum, which is quite
common for NFS.
Disable hardware RX csum calculation with pseudo header; it will be
better than doing software csum if hardware csum error happens, since
the error rate is too high.
Reported-by: Thomas Nikolajsen <thomas.nikolajsen@mail.dk>
miscalculate csum of frames carrying UDP datagrams. If UDP datagrams
are not fragmented by IP, then the rate of miscalculation is low, but
if UDP datagrams are fragmented by IP, then most of the frames will be
delivered to the upper layer with wrong hardware csum, which is quite
common for NFS.
Disable hardware RX csum calculation with pseudo header; it will be
better than doing software csum if hardware csum error happens, since
the error rate is too high.
Reported-by: Thomas Nikolajsen <thomas.nikolajsen@mail.dk>
| sys/dev/netif/bge/if_bge.c | diffblobblamehistory |