[PATCH 3/5] pktgen: Add behavior flag names array - pkt_flag_names

Dmitry Safonov
2018-01-09T13:56:44Z

The array will be used to simplify the code that prints/reads pkg flags.
Sorted the array in order of printing the flags in pktgen_if_show()
Note: Renamed IPSEC_ON => IPSEC for simplicity.

No visible behavior change expected.

Signed-off-by: Dmitry Safonov <dima@arista.com>
---
net/core/pktgen.c | 64 +++++++++++++++++++++++++++++++++++--------------------
1 file changed, 41 insertions(+), 23 deletions(-)

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index ab63943ffd03..51f273319baf 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -184,25 +184,43 @@

#define func_enter() pr_debug("entering %s\n", __func__);

+#define PKT_FLAGS \
+ pf(IPV6) /* Interface in IPV6 Mode */ \
+ pf(IPSRC_RND) /* IP-Src Random */ \
+ pf(IPDST_RND) /* IP-Dst Random */ \
+ pf(TXSIZE_RND) /* Transmit size is random */ \
+ pf(UDPSRC_RND) /* UDP-Src Random */ \
+ pf(UDPDST_RND) /* UDP-Dst Random */ \
+ pf(UDPCSUM) /* Include UDP checksum */ \
+ pf(NO_TIMESTAMP) /* Don't timestamp packets (default TS) */ \
+ pf(MPLS_RND) /* Random MPLS labels */ \
+ pf(QUEUE_MAP_RND) /* queue map Random */ \
+ pf(QUEUE_MAP_CPU) /* queue map mirrors smp_processor_id() */ \
+ pf(FLOW_SEQ) /* Sequential flows */ \
+ pf(IPSEC) /* ipsec on for flows */ \
+ pf(MACSRC_RND) /* MAC-Src Random */ \
+ pf(MACDST_RND) /* MAC-Dst Random */ \
+ pf(VID_RND) /* Random VLAN ID */ \
+ pf(SVID_RND) /* Random SVLAN ID */ \
+ pf(NODE) /* Node memory alloc*/ \
+
+#define pf(flag) flag##_SHIFT,
+enum pkt_flags {
+ PKT_FLAGS
+};
+#undef pf
+
+#define pf(flag) static const __u32 F_##flag = (1<<flag##_SHIFT);
+PKT_FLAGS
+#undef pf
+
+#define pf(flag) __stringify(flag),
+char *pkt_flag_names[] = {
+ PKT_FLAGS
+};
+#undef pf
+
/* Device flag bits */
-#define F_IPSRC_RND (1<<0) /* IP-Src Random */
-#define F_IPDST_RND (1<<1) /* IP-Dst Random */
-#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
-#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
-#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
-#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
-#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
-#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
-#define F_MPLS_RND (1<<8) /* Random MPLS labels */
-#define F_VID_RND (1<<9) /* Random VLAN ID */
-#define F_SVID_RND (1<<10) /* Random SVLAN ID */
-#define F_FLOW_SEQ (1<<11) /* Sequential flows */
-#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
-#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
-#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
-#define F_NODE (1<<15) /* Node memory alloc*/
-#define F_UDPCSUM (1<<16) /* Include UDP checksum */
-#define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */

/* Thread control flag bits */
#define T_STOP (1<<0) /* Stop run */
@@ -673,7 +691,7 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
}

#ifdef CONFIG_XFRM
- if (pkt_dev->flags & F_IPSEC_ON) {
+ if (pkt_dev->flags & F_IPSEC) {
seq_puts(seq, "IPSEC ");
if (pkt_dev->spi)
seq_printf(seq, "spi:%u", pkt_dev->spi);
@@ -1304,10 +1322,10 @@ static ssize_t pktgen_if_write(struct file *file,
pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
#ifdef CONFIG_XFRM
else if (strcmp(f, "IPSEC") == 0)
- pkt_dev->flags |= F_IPSEC_ON;
+ pkt_dev->flags |= F_IPSEC;

else if (strcmp(f, "!IPSEC") == 0)
- pkt_dev->flags &= ~F_IPSEC_ON;
+ pkt_dev->flags &= ~F_IPSEC;
#endif

else if (strcmp(f, "!IPV6") == 0)
@@ -2550,7 +2568,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
pkt_dev->flows[flow].cur_daddr =
pkt_dev->cur_daddr;
#ifdef CONFIG_XFRM
- if (pkt_dev->flags & F_IPSEC_ON)
+ if (pkt_dev->flags & F_IPSEC)
get_ipsec_sa(pkt_dev, flow);
#endif
pkt_dev->nflows++;
@@ -2655,7 +2673,7 @@ static void free_SAs(struct pktgen_dev *pkt_dev)
static int process_ipsec(struct pktgen_dev *pkt_dev,
struct sk_buff *skb, __be16 protocol)
{
- if (pkt_dev->flags & F_IPSEC_ON) {
+ if (pkt_dev->flags & F_IPSEC) {
struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
int nhead = 0;
if (x) {
--
2.13.6