Commit dbc52deb authored by Hariprasad Kelam's avatar Hariprasad Kelam Committed by David S. Miller
Browse files

octeontx2-af: Debugfs support for DMAC filters 



Add debugfs support to display CGX/RPM DMAC filter
table associated with pf.

cat /sys/kernel/debug/octeontx2/cgx/cgx0/lmac0/mac_filter

PCI dev       RVUPF  BROADCAST  MULTICAST  FILTER-MODE
0002:02:00.0  PF2    ACCEPT     ACCEPT     UNICAST

DMAC-INDEX  ADDRESS
      0     00:0f:b7:06:17:06
      1     1a:1b:1c:1d:1e:01
      2     1a:1b:1c:1d:1e:02

Signed-off-by: default avatarHariprasad Kelam <hkelam@marvell.com>
Signed-off-by: default avatarSunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6f14078e

drivers/net/ethernet/marvell/octeontx2/af/cgx.c

+28 −0
Original line number Diff line number Diff line
@@ -266,6 +266,34 @@ int cgx_lmac_addr_set(u8 cgx_id, u8 lmac_id, u8 *mac_addr) 
	return 0;

}



u64 cgx_read_dmac_ctrl(void *cgxd, int lmac_id)

{

	struct mac_ops *mac_ops;

	struct cgx *cgx = cgxd;



	if (!cgxd || !is_lmac_valid(cgxd, lmac_id))

		return 0;



	cgx = cgxd;

	/* Get mac_ops to know csr offset */

	mac_ops = cgx->mac_ops;



	return cgx_read(cgxd, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);

}



u64 cgx_read_dmac_entry(void *cgxd, int index)

{

	struct mac_ops *mac_ops;

	struct cgx *cgx;



	if (!cgxd)

		return 0;



	cgx = cgxd;

	mac_ops = cgx->mac_ops;

	return cgx_read(cgx, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 8)));

}



int cgx_lmac_addr_add(u8 cgx_id, u8 lmac_id, u8 *mac_addr)

{

	struct cgx *cgx_dev = cgx_get_pdata(cgx_id);

drivers/net/ethernet/marvell/octeontx2/af/cgx.h

+3 −0
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ 
#define CGX_DMAC_BCAST_MODE		BIT_ULL(0)

#define CGXX_CMRX_RX_DMAC_CAM0		(0x200 + mac_ops->csr_offset)

#define CGX_DMAC_CAM_ADDR_ENABLE	BIT_ULL(48)

#define CGX_DMAC_CAM_ENTRY_LMACID	GENMASK_ULL(50, 49)

#define CGXX_CMRX_RX_DMAC_CAM1		0x400

#define CGX_RX_DMAC_ADR_MASK		GENMASK_ULL(47, 0)

#define CGXX_CMRX_TX_STAT0		0x700
@@ -172,4 +173,6 @@ unsigned long cgx_get_lmac_bmap(void *cgxd); 
void cgx_lmac_write(int cgx_id, int lmac_id, u64 offset, u64 val);

u64 cgx_lmac_read(int cgx_id, int lmac_id, u64 offset);

int cgx_lmac_addr_update(u8 cgx_id, u8 lmac_id, u8 *mac_addr, u8 index);

u64 cgx_read_dmac_ctrl(void *cgxd, int lmac_id);

u64 cgx_read_dmac_entry(void *cgxd, int index);

#endif /* CGX_H */

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

+1 −0
Original line number Diff line number Diff line
@@ -744,6 +744,7 @@ void npc_read_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, 
bool is_mac_feature_supported(struct rvu *rvu, int pf, int feature);

u32  rvu_cgx_get_fifolen(struct rvu *rvu);

void *rvu_first_cgx_pdata(struct rvu *rvu);

int cgxlmac_to_pf(struct rvu *rvu, int cgx_id, int lmac_id);



int npc_get_nixlf_mcam_index(struct npc_mcam *mcam, u16 pcifunc, int nixlf,

			     int type);

drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c

+1 −1
Original line number Diff line number Diff line
@@ -63,7 +63,7 @@ static u16 cgxlmac_to_pfmap(struct rvu *rvu, u8 cgx_id, u8 lmac_id) 
	return rvu->cgxlmac2pf_map[CGX_OFFSET(cgx_id) + lmac_id];

}



static int cgxlmac_to_pf(struct rvu *rvu, int cgx_id, int lmac_id)

int cgxlmac_to_pf(struct rvu *rvu, int cgx_id, int lmac_id)

{

	unsigned long pfmap;

drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c

+80 −8
Original line number Diff line number Diff line
@@ -1971,10 +1971,9 @@ static int cgx_print_stats(struct seq_file *s, int lmac_id) 
	return err;

}



static int rvu_dbg_cgx_stat_display(struct seq_file *filp, void *unused)

static int rvu_dbg_derive_lmacid(struct seq_file *filp, int *lmac_id)

{

	struct dentry *current_dir;

	int err, lmac_id;

	char *buf;



	current_dir = filp->file->f_path.dentry->d_parent;
@@ -1982,17 +1981,87 @@ static int rvu_dbg_cgx_stat_display(struct seq_file *filp, void *unused) 
	if (!buf)

		return -EINVAL;



	err = kstrtoint(buf + 1, 10, &lmac_id);

	if (!err) {

		err = cgx_print_stats(filp, lmac_id);

		if (err)

			return err;

	return kstrtoint(buf + 1, 10, lmac_id);

}



static int rvu_dbg_cgx_stat_display(struct seq_file *filp, void *unused)

{

	int lmac_id, err;



	err = rvu_dbg_derive_lmacid(filp, &lmac_id);

	if (!err)

		return cgx_print_stats(filp, lmac_id);



	return err;

}



RVU_DEBUG_SEQ_FOPS(cgx_stat, cgx_stat_display, NULL);



static int cgx_print_dmac_flt(struct seq_file *s, int lmac_id)

{

	struct pci_dev *pdev = NULL;

	void *cgxd = s->private;

	char *bcast, *mcast;

	u16 index, domain;

	u8 dmac[ETH_ALEN];

	struct rvu *rvu;

	u64 cfg, mac;

	int pf;



	rvu = pci_get_drvdata(pci_get_device(PCI_VENDOR_ID_CAVIUM,

					     PCI_DEVID_OCTEONTX2_RVU_AF, NULL));

	if (!rvu)

		return -ENODEV;



	pf = cgxlmac_to_pf(rvu, cgx_get_cgxid(cgxd), lmac_id);

	domain = 2;



	pdev = pci_get_domain_bus_and_slot(domain, pf + 1, 0);

	if (!pdev)

		return 0;



	cfg = cgx_read_dmac_ctrl(cgxd, lmac_id);

	bcast = cfg & CGX_DMAC_BCAST_MODE ? "ACCEPT" : "REJECT";

	mcast = cfg & CGX_DMAC_MCAST_MODE ? "ACCEPT" : "REJECT";



	seq_puts(s,

		 "PCI dev       RVUPF   BROADCAST  MULTICAST  FILTER-MODE\n");

	seq_printf(s, "%s  PF%d  %9s  %9s",

		   dev_name(&pdev->dev), pf, bcast, mcast);

	if (cfg & CGX_DMAC_CAM_ACCEPT)

		seq_printf(s, "%12s\n\n", "UNICAST");

	else

		seq_printf(s, "%16s\n\n", "PROMISCUOUS");



	seq_puts(s, "\nDMAC-INDEX  ADDRESS\n");



	for (index = 0 ; index < 32 ; index++) {

		cfg = cgx_read_dmac_entry(cgxd, index);

		/* Display enabled dmac entries associated with current lmac */

		if (lmac_id == FIELD_GET(CGX_DMAC_CAM_ENTRY_LMACID, cfg) &&

		    FIELD_GET(CGX_DMAC_CAM_ADDR_ENABLE, cfg)) {

			mac = FIELD_GET(CGX_RX_DMAC_ADR_MASK, cfg);

			u64_to_ether_addr(mac, dmac);

			seq_printf(s, "%7d     %pM\n", index, dmac);

		}

	}



	return 0;

}



static int rvu_dbg_cgx_dmac_flt_display(struct seq_file *filp, void *unused)

{

	int err, lmac_id;



	err = rvu_dbg_derive_lmacid(filp, &lmac_id);

	if (!err)

		return cgx_print_dmac_flt(filp, lmac_id);



	return err;

}



RVU_DEBUG_SEQ_FOPS(cgx_dmac_flt, cgx_dmac_flt_display, NULL);



static void rvu_dbg_cgx_init(struct rvu *rvu)

{

	struct mac_ops *mac_ops;
@@ -2029,6 +2098,9 @@ static void rvu_dbg_cgx_init(struct rvu *rvu) 


			debugfs_create_file("stats", 0600, rvu->rvu_dbg.lmac,

					    cgx, &rvu_dbg_cgx_stat_fops);

			debugfs_create_file("mac_filter", 0600,

					    rvu->rvu_dbg.lmac, cgx,

					    &rvu_dbg_cgx_dmac_flt_fops);

		}

	}

}