diff options
| author | Edward Cree <ecree.xilinx@gmail.com> | 2022-07-20 19:29:34 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-22 12:50:06 +0100 |
| commit | da56552d04c54b68788fb3700b5150814e1de3d1 (patch) | |
| tree | 508f369c30d09f59a3d0a2c0754056d98af24e09 /drivers/net/ethernet/sfc/ef100_rep.c | |
| parent | e1479556f808b1702a0cb83e823784ccf67c305d (diff) | |
sfc: determine representee m-port for EF100 representors
An MAE port, or m-port, is a port (source/destination for traffic) on
the Match-Action Engine (the internal switch on EF100).
Representors will use their representee's m-port for two purposes: as
a destination override on TX from the representor, and as a source
match in 'default rules' to steer representee traffic (when not
matched by e.g. a TC flower rule) to representor RX via the parent
PF's receive queue.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/ef100_rep.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef100_rep.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef100_rep.c b/drivers/net/ethernet/sfc/ef100_rep.c index 0b4f7d536ae6..cf0eac920592 100644 --- a/drivers/net/ethernet/sfc/ef100_rep.c +++ b/drivers/net/ethernet/sfc/ef100_rep.c @@ -11,6 +11,7 @@ #include "ef100_rep.h" #include "ef100_nic.h" +#include "mae.h" #define EFX_EF100_REP_DRIVER "efx_ef100_rep" @@ -124,6 +125,25 @@ fail1: return ERR_PTR(rc); } +static int efx_ef100_configure_rep(struct efx_rep *efv) +{ + struct efx_nic *efx = efv->parent; + u32 selector; + int rc; + + /* Construct mport selector for corresponding VF */ + efx_mae_mport_vf(efx, efv->idx, &selector); + /* Look up actual mport ID */ + rc = efx_mae_lookup_mport(efx, selector, &efv->mport); + if (rc) + return rc; + pci_dbg(efx->pci_dev, "VF %u has mport ID %#x\n", efv->idx, efv->mport); + /* mport label should fit in 16 bits */ + WARN_ON(efv->mport >> 16); + + return 0; +} + static void efx_ef100_rep_destroy_netdev(struct efx_rep *efv) { struct efx_nic *efx = efv->parent; @@ -147,6 +167,13 @@ int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i) rc); return rc; } + rc = efx_ef100_configure_rep(efv); + if (rc) { + pci_err(efx->pci_dev, + "Failed to configure representor for VF %d, rc %d\n", + i, rc); + goto fail; + } rc = register_netdev(efv->net_dev); if (rc) { pci_err(efx->pci_dev, |