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| author | Xin Long <lucien.xin@gmail.com> | 2023-02-09 18:44:24 -0500 |
|---|---|---|
| committer | David Ahern <dsahern@kernel.org> | 2023-02-18 10:04:41 -0700 |
| commit | 1dafe448c7a2f2be5dfddd8da250980708a48c41 (patch) | |
| tree | 79bb3b7600d6c73931524aa598189c1c0b1102da /man | |
| parent | 0b257557d8662e5ce2e65ec80343b771be2c56dd (diff) | |
| download | iproute2-1dafe448c7a2f2be5dfddd8da250980708a48c41.tar.gz | |
iplink: add gso and gro max_size attributes for ipv4
This patch adds two attributes gso/gro_ipv4_max_size in iplink for the
user space support of the BIG TCP for IPv4:
https://lore.kernel.org/netdev/de811bf3-e2d8-f727-72bc-c8a754a9d929@tessares.net/T/
Note that after this kernel patchset, "gso/gro_max_size" are used for IPv6
packets while "gso/gro_ipv4_max_size" are for IPv4 patckets. To not break
these old applications using "gso/gro_ipv4_max_size" for IPv4 GSO packets,
the new size will also be set on "gso/gro_ipv4_max_size" in kernel when
"gso/gro_max_size" changes to a value <= 65536.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Diffstat (limited to 'man')
| -rw-r--r-- | man/man8/ip-link.8.in | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in index eeddf493..c8c65657 100644 --- a/man/man8/ip-link.8.in +++ b/man/man8/ip-link.8.in @@ -38,11 +38,16 @@ ip-link \- network device configuration .br .RB "[ " gso_max_size .IR BYTES " ]" +.RB "[ " gso_ipv4_max_size +.IR BYTES " ]" .RB "[ " gso_max_segs .IR SEGMENTS " ]" .br .RB "[ " gro_max_size .IR BYTES " ]" +.RB "[ " gro_ipv4_max_size +.IR BYTES " ]" +.br .RB "[ " netns " {" .IR PID " | " NETNSNAME " } ]" .br @@ -90,10 +95,15 @@ ip-link \- network device configuration .br .RB "[ " gso_max_size .IR BYTES " ]" +.RB "[ " gso_ipv4_max_size +.IR BYTES " ]" .RB "[ " gso_max_segs .IR SEGMENTS " ]" +.br .RB "[ " gro_max_size .IR BYTES " ]" +.RB "[ " gro_ipv4_max_size +.IR BYTES " ]" .br .RB "[ " name .IR NEWNAME " ]" @@ -423,7 +433,14 @@ specifies the number of receive queues for new device. .TP .BI gso_max_size " BYTES " specifies the recommended maximum size of a Generic Segment Offload -packet the new device should accept. +packet the new device should accept. This is also used to enable BIG +TCP for IPv6 on this device when the size is greater than 65536. + +.TP +.BI gso_ipv4_max_size " BYTES " +specifies the recommended maximum size of a IPv4 Generic Segment Offload +packet the new device should accept. This is especially used to enable +BIG TCP for IPv4 on this device by setting to a size greater than 65536. .TP .BI gso_max_segs " SEGMENTS " @@ -432,8 +449,15 @@ segments the new device should accept. .TP .BI gro_max_size " BYTES " -specifies the maximum size of a packet built by GRO stack -on this device. +specifies the maximum size of a packet built by GRO stack on this +device. This is also used for BIG TCP to allow the size of a +merged IPv6 GSO packet on this device greater than 65536. + +.TP +.BI gro_ipv4_max_size " BYTES " +specifies the maximum size of a IPv4 packet built by GRO stack on this +device. This is especially used for BIG TCP to allow the size of a +merged IPv4 GSO packet on this device greater than 65536. .TP .BI index " IDX " |