* [PATCH iproute2] iplink: report tso_max_size and tso_max_segs
@ 2022-05-25 15:36 Eric Dumazet
2022-05-30 16:00 ` patchwork-bot+netdevbpf
0 siblings, 1 reply; 2+ messages in thread
From: Eric Dumazet @ 2022-05-25 15:36 UTC (permalink / raw)
To: David Ahern, Stephen Hemminger; +Cc: netdev, Eric Dumazet, Eric Dumazet
From: Eric Dumazet <edumazet@google.com>
New netlink attributes IFLA_TSO_MAX_SIZE and IFLA_TSO_MAX_SEGS
are used to report device TSO limits to user-space.
ip -d link sh dev eth0
...
tso_max_size 65536 tso_max_segs 65535
ip -d link sh dev lo
...
tso_max_size 524280 tso_max_segs 65535
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
This compiles once include/uapi/linux/if_link.h has been synced.
It seems iproute2 maintainers prefer to sync the headers in separate patches.
ip/ipaddress.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index a80996efdc28753da3cc80e7a90e39941a67b926..a1ade37ca2777a121f835abcdc3beeda3eb8f3a5 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -1219,6 +1219,18 @@ int print_linkinfo(struct nlmsghdr *n, void *arg)
"gso_max_segs %u ",
rta_getattr_u32(tb[IFLA_GSO_MAX_SEGS]));
+ if (tb[IFLA_TSO_MAX_SIZE])
+ print_uint(PRINT_ANY,
+ "tso_max_size",
+ "tso_max_size %u ",
+ rta_getattr_u32(tb[IFLA_TSO_MAX_SIZE]));
+
+ if (tb[IFLA_TSO_MAX_SEGS])
+ print_uint(PRINT_ANY,
+ "tso_max_segs",
+ "tso_max_segs %u ",
+ rta_getattr_u32(tb[IFLA_TSO_MAX_SEGS]));
+
if (tb[IFLA_GRO_MAX_SIZE])
print_uint(PRINT_ANY,
"gro_max_size",
--
2.36.1.124.g0e6072fb45-goog
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2022-05-25 15:36 [PATCH iproute2] iplink: report tso_max_size and tso_max_segs Eric Dumazet
2022-05-30 16:00 ` patchwork-bot+netdevbpf
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