| Message ID | e9de21b76807da310658dbfd46d6177c1c592fe7.1731462244.git.dxu@dxuuu.xyz (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Michal Kubecek |
| Headers | show |
| Series | [ethtool-next,v3] rxclass: Make output for RSS context action explicit | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Not a local patch |
On Tue, 12 Nov 2024 18:45:43 -0700 Daniel Xu wrote: > # ./ethtool -n eth0 rule 0 > Filter: 0 > Rule Type: Raw IPv6 > Src IP addr: :: mask: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff > Dest IP addr: <redacted> mask: :: > Traffic Class: 0x0 mask: 0xff > Protocol: 0 mask: 0xff > L4 bytes: 0x0 mask: 0xffffffff > Action: Direct to RSS context id 1 Acked-by: Jakub Kicinski <kuba@kernel.org>
On 13/11/2024 01:45, Daniel Xu wrote: > Fix by making output more clear. Also suppress base offset queue for the > common case of 0. Example of new output: > > # ./ethtool -n eth0 rule 0 > Filter: 0 > Rule Type: Raw IPv6 > Src IP addr: :: mask: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff > Dest IP addr: <redacted> mask: :: > Traffic Class: 0x0 mask: 0xff > Protocol: 0 mask: 0xff > L4 bytes: 0x0 mask: 0xffffffff > Action: Direct to RSS context id 1 Commit comment hasn't been updated to match the current patch.
diff --git a/rxclass.c b/rxclass.c index f17e3a5..1e202cc 100644 --- a/rxclass.c +++ b/rxclass.c @@ -248,13 +248,17 @@ static void rxclass_print_nfc_rule(struct ethtool_rx_flow_spec *fsp, rxclass_print_nfc_spec_ext(fsp); - if (fsp->flow_type & FLOW_RSS) - fprintf(stdout, "\tRSS Context ID: %u\n", rss_context); - if (fsp->ring_cookie == RX_CLS_FLOW_DISC) { fprintf(stdout, "\tAction: Drop\n"); } else if (fsp->ring_cookie == RX_CLS_FLOW_WAKE) { fprintf(stdout, "\tAction: Wake-on-LAN\n"); + } else if (fsp->flow_type & FLOW_RSS) { + u64 queue = ethtool_get_flow_spec_ring(fsp->ring_cookie); + + fprintf(stdout, "\tAction: Direct to RSS Context %u", rss_context); + if (queue) + fprintf(stdout, " (queue base offset: %llu)", queue); + fprintf(stdout, "\n"); } else { u64 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie); u64 queue = ethtool_get_flow_spec_ring(fsp->ring_cookie);
Currently `ethtool -n` prints out misleading output if the action for an ntuple rule is to redirect to an RSS context. For example: # ethtool -X eth0 hfunc toeplitz context new start 24 equal 8 New RSS context is 1 # ethtool -N eth0 flow-type ip6 dst-ip $IP6 context 1 Added rule with ID 0 # ethtool -n eth0 rule 0 Filter: 0 Rule Type: Raw IPv6 Src IP addr: :: mask: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff Dest IP addr: <redacted> mask: :: Traffic Class: 0x0 mask: 0xff Protocol: 0 mask: 0xff L4 bytes: 0x0 mask: 0xffffffff RSS Context ID: 1 Action: Direct to queue 0 The above output suggests that the HW will direct to queue 0 where in reality queue 0 is just the base offset from which the redirection table lookup in the RSS context is added to. Fix by making output more clear. Also suppress base offset queue for the common case of 0. Example of new output: # ./ethtool -n eth0 rule 0 Filter: 0 Rule Type: Raw IPv6 Src IP addr: :: mask: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff Dest IP addr: <redacted> mask: :: Traffic Class: 0x0 mask: 0xff Protocol: 0 mask: 0xff L4 bytes: 0x0 mask: 0xffffffff Action: Direct to RSS context id 1 Reviewed-by: Edward Cree <ecree.xilinx@gmail.com> Tested-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> --- Changes from v2: * Change capitalization and formatting Changes from v1: * Fix compile error * Add queue base offset rxclass.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)