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eth: fbnic: add MAC address TCAM to debugfs

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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: Alexander Duyck <alexanderduyck@meta.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250204010038.1404268-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Alexander Duyck 2025-02-03 17:00:37 -08:00 committed by Paolo Abeni
parent fa796178e5
commit 79c0c4689b
1 changed files with 36 additions and 0 deletions
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36
drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c
View File

@ -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)