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authorVladimir Oltean <vladimir.oltean@nxp.com>2021-02-14 00:37:56 +0200
committerDavid S. Miller <davem@davemloft.net>2021-02-14 17:31:44 -0800
commit40d3f295b5feda409784e569550057b5fbc2a295 (patch)
tree0ad0d7a8e34853fbc96d7c6e099c97385830e2c2 /drivers/net/ethernet/mscc/ocelot.c
parent8a678bb29bd2b8a290ab74aa4157471621676145 (diff)
net: mscc: ocelot: use common tag parsing code with DSA
The Injection Frame Header and Extraction Frame Header that the switch prepends to frames over the NPI port is also prepended to frames delivered over the CPU port module's queues. Let's unify the handling of the frame headers by making the ocelot driver call some helpers exported by the DSA tagger. Among other things, this allows us to get rid of the strange cpu_to_be32 when transmitting the Injection Frame Header on ocelot, since the packing API uses network byte order natively (when "quirks" is 0). The comments above ocelot_gen_ifh talk about setting pop_cnt to 3, and the cpu extraction queue mask to something, but the code doesn't do it, so we don't do it either. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot.c')
-rw-r--r--drivers/net/ethernet/mscc/ocelot.c38
1 files changed, 8 insertions, 30 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 7106d9ee534a..699b0c1c1780 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -4,6 +4,7 @@
*
* Copyright (c) 2017 Microsemi Corporation
*/
+#include <linux/dsa/ocelot.h>
#include <linux/if_bridge.h>
#include <soc/mscc/ocelot_vcap.h>
#include "ocelot.h"
@@ -628,26 +629,6 @@ void ocelot_get_txtstamp(struct ocelot *ocelot)
}
EXPORT_SYMBOL(ocelot_get_txtstamp);
-/* Generate the IFH for frame injection
- *
- * The IFH is a 128bit-value
- * bit 127: bypass the analyzer processing
- * bit 56-67: destination mask
- * bit 28-29: pop_cnt: 3 disables all rewriting of the frame
- * bit 20-27: cpu extraction queue mask
- * bit 16: tag type 0: C-tag, 1: S-tag
- * bit 0-11: VID
- */
-static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info)
-{
- ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21);
- ifh[1] = (0xf00 & info->port) >> 8;
- ifh[2] = (0xff & info->port) << 24;
- ifh[3] = (info->tag_type << 16) | info->vid;
-
- return 0;
-}
-
bool ocelot_can_inject(struct ocelot *ocelot, int grp)
{
u32 val = ocelot_read(ocelot, QS_INJ_STATUS);
@@ -664,23 +645,20 @@ EXPORT_SYMBOL(ocelot_can_inject);
void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
u32 rew_op, struct sk_buff *skb)
{
- struct frame_info info = {};
- u32 ifh[OCELOT_TAG_LEN / 4];
+ u32 ifh[OCELOT_TAG_LEN / 4] = {0};
unsigned int i, count, last;
ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);
- info.port = BIT(port);
- info.tag_type = IFH_TAG_TYPE_C;
- info.vid = skb_vlan_tag_get(skb);
- info.rew_op = rew_op;
-
- ocelot_gen_ifh(ifh, &info);
+ ocelot_ifh_set_bypass(ifh, 1);
+ ocelot_ifh_set_dest(ifh, BIT(port));
+ ocelot_ifh_set_tag_type(ifh, IFH_TAG_TYPE_C);
+ ocelot_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
+ ocelot_ifh_set_rew_op(ifh, rew_op);
for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
- ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]),
- QS_INJ_WR, grp);
+ ocelot_write_rix(ocelot, ifh[i], QS_INJ_WR, grp);
count = DIV_ROUND_UP(skb->len, 4);
last = skb->len % 4;