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octeontx2-af: Update bcast list upon NIXLF alloc/free

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Upon NIXLF ALLOC/FREE, add or remove corresponding PF_FUNC from
the broadcast packet replication list of the CGX LMAC mapped
RVU PF.

Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sunil Goutham 2018-10-22 23:25:55 +05:30 committed by David S. Miller
parent 52d3d327a2
commit 4b05528ebf
1 changed files with 133 additions and 0 deletions
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133
drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
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@ -16,6 +16,8 @@
#include "rvu.h"
#include "cgx.h"
static int nix_update_bcast_mce_list(struct rvu *rvu, u16 pcifunc, bool add);
enum mc_tbl_sz {
MC_TBL_SZ_256,
MC_TBL_SZ_512,
@ -108,6 +110,7 @@ static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf)
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
u8 cgx_id, lmac_id;
int pkind, pf;
int err;
pf = rvu_get_pf(pcifunc);
if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK)
@ -130,9 +133,30 @@ static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf)
case NIX_INTF_TYPE_LBK:
break;
}
/* Add this PF_FUNC to bcast pkt replication list */
err = nix_update_bcast_mce_list(rvu, pcifunc, true);
if (err) {
dev_err(rvu->dev,
"Bcast list, failed to enable PF_FUNC 0x%x\n",
pcifunc);
}
return 0;
}
static void nix_interface_deinit(struct rvu *rvu, u16 pcifunc, u8 nixlf)
{
int err;
/* Remove this PF_FUNC from bcast pkt replication list */
err = nix_update_bcast_mce_list(rvu, pcifunc, false);
if (err) {
dev_err(rvu->dev,
"Bcast list, failed to disable PF_FUNC 0x%x\n",
pcifunc);
}
}
static void nix_setup_lso_tso_l3(struct rvu *rvu, int blkaddr,
u64 format, bool v4, u64 *fidx)
{
@ -786,6 +810,8 @@ int rvu_mbox_handler_NIX_LF_FREE(struct rvu *rvu, struct msg_req *req,
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_interface_deinit(rvu, pcifunc, nixlf);
/* Reset this NIX LF */
err = rvu_lf_reset(rvu, block, nixlf);
if (err) {
@ -1147,6 +1173,113 @@ static int nix_setup_mce(struct rvu *rvu, int mce, u8 op,
return 0;
}
static int nix_update_mce_list(struct nix_mce_list *mce_list,
u16 pcifunc, int idx, bool add)
{
struct mce *mce, *tail = NULL;
bool delete = false;
/* Scan through the current list */
hlist_for_each_entry(mce, &mce_list->head, node) {
/* If already exists, then delete */
if (mce->pcifunc == pcifunc && !add) {
delete = true;
break;
}
tail = mce;
}
if (delete) {
hlist_del(&mce->node);
kfree(mce);
mce_list->count--;
return 0;
}
if (!add)
return 0;
/* Add a new one to the list, at the tail */
mce = kzalloc(sizeof(*mce), GFP_KERNEL);
if (!mce)
return -ENOMEM;
mce->idx = idx;
mce->pcifunc = pcifunc;
if (!tail)
hlist_add_head(&mce->node, &mce_list->head);
else
hlist_add_behind(&mce->node, &tail->node);
mce_list->count++;
return 0;
}
static int nix_update_bcast_mce_list(struct rvu *rvu, u16 pcifunc, bool add)
{
int err = 0, idx, next_idx, count;
struct nix_mce_list *mce_list;
struct mce *mce, *next_mce;
struct nix_mcast *mcast;
struct nix_hw *nix_hw;
struct rvu_pfvf *pfvf;
int blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return 0;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return 0;
mcast = &nix_hw->mcast;
/* Get this PF/VF func's MCE index */
pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
idx = pfvf->bcast_mce_idx + (pcifunc & RVU_PFVF_FUNC_MASK);
mce_list = &pfvf->bcast_mce_list;
if (idx > (pfvf->bcast_mce_idx + mce_list->max)) {
dev_err(rvu->dev,
"%s: Idx %d > max MCE idx %d, for PF%d bcast list\n",
__func__, idx, mce_list->max,
pcifunc >> RVU_PFVF_PF_SHIFT);
return -EINVAL;
}
spin_lock(&mcast->mce_lock);
err = nix_update_mce_list(mce_list, pcifunc, idx, add);
if (err)
goto end;
/* Disable MCAM entry in NPC */
if (!mce_list->count)
goto end;
count = mce_list->count;
/* Dump the updated list to HW */
hlist_for_each_entry(mce, &mce_list->head, node) {
next_idx = 0;
count--;
if (count) {
next_mce = hlist_entry(mce->node.next,
struct mce, node);
next_idx = next_mce->idx;
}
/* EOL should be set in last MCE */
err = nix_setup_mce(rvu, mce->idx,
NIX_AQ_INSTOP_WRITE, mce->pcifunc,
next_idx, count ? false : true);
if (err)
goto end;
}
end:
spin_unlock(&mcast->mce_lock);
return err;
}
static int nix_setup_bcast_tables(struct rvu *rvu, struct nix_hw *nix_hw)
{
struct nix_mcast *mcast = &nix_hw->mcast;