Commit 79c0c468 authored by Alexander Duyck's avatar Alexander Duyck Committed by Paolo Abeni
Browse files

eth: fbnic: add MAC address TCAM to debugfs 



Add read only access to the 32-entry MAC address TCAM via debugfs.
BMC filtering shares the same table so this is quite useful
to access during debug. See next commit for an example output.

Signed-off-by: default avatarAlexander Duyck <alexanderduyck@meta.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250204010038.1404268-1-kuba@kernel.org


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent fa796178

drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c

+36 −0
Original line number Diff line number Diff line
@@ -10,6 +10,40 @@ 


static struct dentry *fbnic_dbg_root;



static void fbnic_dbg_desc_break(struct seq_file *s, int i)

{

	while (i--)

		seq_putc(s, '-');



	seq_putc(s, '\n');

}



static int fbnic_dbg_mac_addr_show(struct seq_file *s, void *v)

{

	struct fbnic_dev *fbd = s->private;

	char hdr[80];

	int i;



	/* Generate Header */

	snprintf(hdr, sizeof(hdr), "%3s %s %-17s %s\n",

		 "Idx", "S", "TCAM Bitmap", "Addr/Mask");

	seq_puts(s, hdr);

	fbnic_dbg_desc_break(s, strnlen(hdr, sizeof(hdr)));



	for (i = 0; i < FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES; i++) {

		struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[i];



		seq_printf(s, "%02d  %d %64pb %pm\n",

			   i, mac_addr->state, mac_addr->act_tcam,

			   mac_addr->value.addr8);

		seq_printf(s, "                        %pm\n",

			   mac_addr->mask.addr8);

	}



	return 0;

}

DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_mac_addr);



static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v)

{

	struct fbnic_dev *fbd = s->private;
@@ -48,6 +82,8 @@ void fbnic_dbg_fbd_init(struct fbnic_dev *fbd) 
	fbd->dbg_fbd = debugfs_create_dir(name, fbnic_dbg_root);

	debugfs_create_file("pcie_stats", 0400, fbd->dbg_fbd, fbd,

			    &fbnic_dbg_pcie_stats_fops);

	debugfs_create_file("mac_addr", 0400, fbd->dbg_fbd, fbd,

			    &fbnic_dbg_mac_addr_fops);

}



void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd)