octeontx2-pf: Add additional checks while configuring ucast/bcast/mcast rules

1. If a profile does not support DMAC extraction then avoid installing NPC
flow rules for unicast. Similarly, if LXMB(L2 and L3) extraction is not
supported by the profile then avoid installing broadcast and multicast
rules.
2. Allow MCAM entry insertion for promiscuous mode.
3. For the profiles where DMAC is not extracted in MKEX key default
unicast entry installed by AF is not valid. Hence do not use action
from the AF installed default unicast entry for such cases.
4. Adjacent packet header fields in a packet like IP header source
and destination addresses or UDP/TCP header source port and destination
can be extracted together in MKEX profile. Therefore MKEX profile can be
configured to in two ways:
	a. Total of 4 bytes from start of UDP header(src port
	   + destination port)
	or
	b. Two bytes from start and two bytes from offset 2

Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Link: https://lore.kernel.org/r/20221118053329.2288486-1-sumang@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index 1e348fd0d930..16cfc802e348 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -617,6 +617,12 @@ void rvu_npc_install_ucast_entry(struct rvu *rvu, u16 pcifunc,
 	if (blkaddr < 0)
 		return;
 
+	/* Ucast rule should not be installed if DMAC
+	 * extraction is not supported by the profile.
+	 */
+	if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf))
+		return;
+
 	index = npc_get_nixlf_mcam_index(mcam, pcifunc,
 					 nixlf, NIXLF_UCAST_ENTRY);
 
@@ -778,6 +784,14 @@ void rvu_npc_install_bcast_match_entry(struct rvu *rvu, u16 pcifunc,
 	/* Get 'pcifunc' of PF device */
 	pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
 	pfvf = rvu_get_pfvf(rvu, pcifunc);
+
+	/* Bcast rule should not be installed if both DMAC
+	 * and LXMB extraction is not supported by the profile.
+	 */
+	if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf) &&
+	    !npc_is_feature_supported(rvu, BIT_ULL(NPC_LXMB), pfvf->nix_rx_intf))
+		return;
+
 	index = npc_get_nixlf_mcam_index(mcam, pcifunc,
 					 nixlf, NIXLF_BCAST_ENTRY);
 
@@ -848,6 +862,14 @@ void rvu_npc_install_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
 	vf_func = pcifunc & RVU_PFVF_FUNC_MASK;
 	pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
 	pfvf = rvu_get_pfvf(rvu, pcifunc);
+
+	/* Mcast rule should not be installed if both DMAC
+	 * and LXMB extraction is not supported by the profile.
+	 */
+	if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf) &&
+	    !npc_is_feature_supported(rvu, BIT_ULL(NPC_LXMB), pfvf->nix_rx_intf))
+		return;
+
 	index = npc_get_nixlf_mcam_index(mcam, pcifunc,
 					 nixlf, NIXLF_ALLMULTI_ENTRY);