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Date: Mon, 24 Jan 2022 18:31:14 +0100
From: Alexander Lobakin <alexandr.lobakin@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: Alexander Lobakin <alexandr.lobakin@...el.com>,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>,
Martyna Szapar-Mudlaw <martyna.szapar-mudlaw@...el.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next 3/4] ice: switch: use a struct to pass packet template params
ice_find_dummy_packet() contains a lot of boilerplate code and a
nice room for copy-paste mistakes.
Instead of passing 3 separate pointers back and forth to get packet
template (dummy) params, directly return a structure containing
them. Then, use a macro to compose compound literals and avoid code
duplication on return path.
Now, dummy packet type/name is needed only once to return a full
correct triple pkt-pkt_len-offsets, and those are all one-liners.
Signed-off-by: Alexander Lobakin <alexandr.lobakin@...el.com>
---
drivers/net/ethernet/intel/ice/ice_switch.c | 164 +++++++-------------
1 file changed, 59 insertions(+), 105 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 834ac8eebfaa..557b45f660ea 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -35,6 +35,20 @@ struct ice_dummy_pkt_offsets {
u16 offset; /* ICE_PROTOCOL_LAST indicates end of list */
};
+struct ice_dummy_pkt_profile {
+ const struct ice_dummy_pkt_offsets *offsets;
+ const u8 *pkt;
+ u16 pkt_len;
+};
+
+#define ICE_PKT_PROFILE(type) ({ \
+ (struct ice_dummy_pkt_profile){ \
+ .pkt = dummy_##type##_packet, \
+ .pkt_len = sizeof(dummy_##type##_packet), \
+ .offsets = dummy_##type##_packet_offsets, \
+ }; \
+})
+
static const struct ice_dummy_pkt_offsets dummy_gre_tcp_packet_offsets[] = {
{ ICE_MAC_OFOS, 0 },
{ ICE_ETYPE_OL, 12 },
@@ -4960,11 +4974,9 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
* @pkt_len: packet length of dummy packet
* @offsets: pointer to receive the pointer to the offsets for the packet
*/
-static void
+static struct ice_dummy_pkt_profile
ice_find_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
- enum ice_sw_tunnel_type tun_type,
- const u8 **pkt, u16 *pkt_len,
- const struct ice_dummy_pkt_offsets **offsets)
+ enum ice_sw_tunnel_type tun_type)
{
bool tcp = false, udp = false, ipv6 = false, vlan = false;
bool ipv6_il = false;
@@ -4994,100 +5006,49 @@ ice_find_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
}
if (tun_type == ICE_SW_TUN_NVGRE) {
- if (tcp && ipv6_il) {
- *pkt = dummy_gre_ipv6_tcp_packet;
- *pkt_len = sizeof(dummy_gre_ipv6_tcp_packet);
- *offsets = dummy_gre_ipv6_tcp_packet_offsets;
- return;
- }
- if (tcp) {
- *pkt = dummy_gre_tcp_packet;
- *pkt_len = sizeof(dummy_gre_tcp_packet);
- *offsets = dummy_gre_tcp_packet_offsets;
- return;
- }
- if (ipv6_il) {
- *pkt = dummy_gre_ipv6_udp_packet;
- *pkt_len = sizeof(dummy_gre_ipv6_udp_packet);
- *offsets = dummy_gre_ipv6_udp_packet_offsets;
- return;
- }
- *pkt = dummy_gre_udp_packet;
- *pkt_len = sizeof(dummy_gre_udp_packet);
- *offsets = dummy_gre_udp_packet_offsets;
- return;
+ if (tcp && ipv6_il)
+ return ICE_PKT_PROFILE(gre_ipv6_tcp);
+ else if (tcp)
+ return ICE_PKT_PROFILE(gre_tcp);
+ else if (ipv6_il)
+ return ICE_PKT_PROFILE(gre_ipv6_udp);
+ else
+ return ICE_PKT_PROFILE(gre_udp);
}
if (tun_type == ICE_SW_TUN_VXLAN ||
tun_type == ICE_SW_TUN_GENEVE) {
- if (tcp && ipv6_il) {
- *pkt = dummy_udp_tun_ipv6_tcp_packet;
- *pkt_len = sizeof(dummy_udp_tun_ipv6_tcp_packet);
- *offsets = dummy_udp_tun_ipv6_tcp_packet_offsets;
- return;
- }
- if (tcp) {
- *pkt = dummy_udp_tun_tcp_packet;
- *pkt_len = sizeof(dummy_udp_tun_tcp_packet);
- *offsets = dummy_udp_tun_tcp_packet_offsets;
- return;
- }
- if (ipv6_il) {
- *pkt = dummy_udp_tun_ipv6_udp_packet;
- *pkt_len = sizeof(dummy_udp_tun_ipv6_udp_packet);
- *offsets = dummy_udp_tun_ipv6_udp_packet_offsets;
- return;
- }
- *pkt = dummy_udp_tun_udp_packet;
- *pkt_len = sizeof(dummy_udp_tun_udp_packet);
- *offsets = dummy_udp_tun_udp_packet_offsets;
- return;
+ if (tcp && ipv6_il)
+ return ICE_PKT_PROFILE(udp_tun_ipv6_tcp);
+ else if (tcp)
+ return ICE_PKT_PROFILE(udp_tun_tcp);
+ else if (ipv6_il)
+ return ICE_PKT_PROFILE(udp_tun_ipv6_udp);
+ else
+ return ICE_PKT_PROFILE(udp_tun_udp);
}
if (udp && !ipv6) {
- if (vlan) {
- *pkt = dummy_vlan_udp_packet;
- *pkt_len = sizeof(dummy_vlan_udp_packet);
- *offsets = dummy_vlan_udp_packet_offsets;
- return;
- }
- *pkt = dummy_udp_packet;
- *pkt_len = sizeof(dummy_udp_packet);
- *offsets = dummy_udp_packet_offsets;
- return;
+ if (vlan)
+ return ICE_PKT_PROFILE(vlan_udp);
+ else
+ return ICE_PKT_PROFILE(udp);
} else if (udp && ipv6) {
- if (vlan) {
- *pkt = dummy_vlan_udp_ipv6_packet;
- *pkt_len = sizeof(dummy_vlan_udp_ipv6_packet);
- *offsets = dummy_vlan_udp_ipv6_packet_offsets;
- return;
- }
- *pkt = dummy_udp_ipv6_packet;
- *pkt_len = sizeof(dummy_udp_ipv6_packet);
- *offsets = dummy_udp_ipv6_packet_offsets;
- return;
+ if (vlan)
+ return ICE_PKT_PROFILE(vlan_udp_ipv6);
+ else
+ return ICE_PKT_PROFILE(udp_ipv6);
} else if ((tcp && ipv6) || ipv6) {
- if (vlan) {
- *pkt = dummy_vlan_tcp_ipv6_packet;
- *pkt_len = sizeof(dummy_vlan_tcp_ipv6_packet);
- *offsets = dummy_vlan_tcp_ipv6_packet_offsets;
- return;
- }
- *pkt = dummy_tcp_ipv6_packet;
- *pkt_len = sizeof(dummy_tcp_ipv6_packet);
- *offsets = dummy_tcp_ipv6_packet_offsets;
- return;
+ if (vlan)
+ return ICE_PKT_PROFILE(vlan_tcp_ipv6);
+ else
+ return ICE_PKT_PROFILE(tcp_ipv6);
}
- if (vlan) {
- *pkt = dummy_vlan_tcp_packet;
- *pkt_len = sizeof(dummy_vlan_tcp_packet);
- *offsets = dummy_vlan_tcp_packet_offsets;
- } else {
- *pkt = dummy_tcp_packet;
- *pkt_len = sizeof(dummy_tcp_packet);
- *offsets = dummy_tcp_packet_offsets;
- }
+ if (vlan)
+ return ICE_PKT_PROFILE(vlan_tcp);
+
+ return ICE_PKT_PROFILE(tcp);
}
/**
@@ -5104,8 +5065,7 @@ ice_find_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
static int
ice_fill_adv_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
struct ice_aqc_sw_rules_elem *s_rule,
- const u8 *dummy_pkt, u16 pkt_len,
- const struct ice_dummy_pkt_offsets *offsets)
+ const struct ice_dummy_pkt_profile *profile)
{
u8 *pkt;
u16 i;
@@ -5115,9 +5075,10 @@ ice_fill_adv_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
*/
pkt = s_rule->pdata.lkup_tx_rx.hdr;
- memcpy(pkt, dummy_pkt, pkt_len);
+ memcpy(pkt, profile->pkt, profile->pkt_len);
for (i = 0; i < lkups_cnt; i++) {
+ const struct ice_dummy_pkt_offsets *offsets = profile->offsets;
enum ice_protocol_type type;
u16 offset = 0, len = 0, j;
bool found = false;
@@ -5198,7 +5159,7 @@ ice_fill_adv_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
}
}
- s_rule->pdata.lkup_tx_rx.hdr_len = cpu_to_le16(pkt_len);
+ s_rule->pdata.lkup_tx_rx.hdr_len = cpu_to_le16(profile->pkt_len);
return 0;
}
@@ -5421,12 +5382,11 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
struct ice_rule_query_data *added_entry)
{
struct ice_adv_fltr_mgmt_list_entry *m_entry, *adv_fltr = NULL;
- u16 rid = 0, i, pkt_len, rule_buf_sz, vsi_handle;
- const struct ice_dummy_pkt_offsets *pkt_offsets;
struct ice_aqc_sw_rules_elem *s_rule = NULL;
+ u16 rid = 0, i, rule_buf_sz, vsi_handle;
+ struct ice_dummy_pkt_profile profile;
struct list_head *rule_head;
struct ice_switch_info *sw;
- const u8 *pkt = NULL;
u16 word_cnt;
u32 act = 0;
int status;
@@ -5454,13 +5414,8 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
if (!word_cnt || word_cnt > ICE_MAX_CHAIN_WORDS)
return -EINVAL;
- /* make sure that we can locate a dummy packet */
- ice_find_dummy_packet(lkups, lkups_cnt, rinfo->tun_type, &pkt, &pkt_len,
- &pkt_offsets);
- if (!pkt) {
- status = -EINVAL;
- goto err_ice_add_adv_rule;
- }
+ /* locate a dummy packet */
+ profile = ice_find_dummy_packet(lkups, lkups_cnt, rinfo->tun_type);
if (!(rinfo->sw_act.fltr_act == ICE_FWD_TO_VSI ||
rinfo->sw_act.fltr_act == ICE_FWD_TO_Q ||
@@ -5501,7 +5456,7 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
}
return status;
}
- rule_buf_sz = ICE_SW_RULE_RX_TX_NO_HDR_SIZE + pkt_len;
+ rule_buf_sz = ICE_SW_RULE_RX_TX_NO_HDR_SIZE + profile.pkt_len;
s_rule = kzalloc(rule_buf_sz, GFP_KERNEL);
if (!s_rule)
return -ENOMEM;
@@ -5561,15 +5516,14 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
s_rule->pdata.lkup_tx_rx.recipe_id = cpu_to_le16(rid);
s_rule->pdata.lkup_tx_rx.act = cpu_to_le32(act);
- status = ice_fill_adv_dummy_packet(lkups, lkups_cnt, s_rule, pkt,
- pkt_len, pkt_offsets);
+ status = ice_fill_adv_dummy_packet(lkups, lkups_cnt, s_rule, &profile);
if (status)
goto err_ice_add_adv_rule;
if (rinfo->tun_type != ICE_NON_TUN) {
status = ice_fill_adv_packet_tun(hw, rinfo->tun_type,
s_rule->pdata.lkup_tx_rx.hdr,
- pkt_offsets);
+ profile.offsets);
if (status)
goto err_ice_add_adv_rule;
}
--
2.34.1
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