Searched hist:"2 d32b0a3" (Results 1 – 1 of 1) sorted by relevance
| /freebsd/sys/dev/mlx5/mlx5_en/ |
| H A D | en.h | 2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
2d32b0a3 Thu Sep 06 11:06:07 GMT 2018 Hans Petter Selasky <hselasky@FreeBSD.org> Maximum number of mbuf frags is off-by-one for worst case scenario in mlx5en(4).
Inspecting the PRM no more than 0x3F data segments, DS, of size 16 bytes is
allowed.
Worst case scenario summary of DS usage:
Header is fixed: 2 DS
Maximum inlining: 98 => (98 - 2) / 16 = 6 DS
Remainder: 0x3F - 2 - 6 = 55 DS (mbuf frags)
Previously a value of 56 DS was used and this would work in the
normal case because not all inline data area was used up.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
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