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| author | bz <bz@FreeBSD.org> | 2011-11-16 02:00:55 +0000 |
|---|---|---|
| committer | bz <bz@FreeBSD.org> | 2011-11-16 02:00:55 +0000 |
| commit | 7fa08af1e8d14155b75cc907e88add16ecc34308 (patch) | |
| tree | b178deba79f7d3cdf716cb33a69a3a8f4896cfcb /sys/dev/qlxgb | |
| parent | 38a861b847703f4e40a2d7ce4f442cf06fefd81d (diff) | |
| download | FreeBSD-src-7fa08af1e8d14155b75cc907e88add16ecc34308.zip FreeBSD-src-7fa08af1e8d14155b75cc907e88add16ecc34308.tar.gz | |
The maximum TSO frame size should be:
maximum IP datagram size (65535 bytes) +
Ethernet header size (14 bytes) +
2 * VLAN tag size (4 bytes) [1].
[1] We need to multiply by 2 to account for the double VLAN tag
provision added in IEEE 802.1ad.
Submitted by: David Somayajulu (david.somayajulu qlogic.com)
MFC after: 4 days
Diffstat (limited to 'sys/dev/qlxgb')
| -rw-r--r-- | sys/dev/qlxgb/qla_def.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/dev/qlxgb/qla_def.h b/sys/dev/qlxgb/qla_def.h index 8a761f4..d40d5e2 100644 --- a/sys/dev/qlxgb/qla_def.h +++ b/sys/dev/qlxgb/qla_def.h @@ -86,7 +86,7 @@ typedef struct qla_tx_buf qla_tx_buf_t; #define QLA_MAX_SEGMENTS 63 /* maximum # of segs in a sg list */ #define QLA_MAX_FRAME_SIZE MJUM9BYTES #define QLA_STD_FRAME_SIZE 1514 -#define QLA_MAX_TSO_FRAME_SIZE (64 * 1024 - 1) +#define QLA_MAX_TSO_FRAME_SIZE ((64 * 1024 - 1) + 22) /* Number of MSIX/MSI Vectors required */ #define Q8_MSI_COUNT 4 |
