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Commit 47a0200d authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by David S. Miller
Browse files

pktgen: use %pI6c for printing IPv6 addresses 



I don't know why %pI6 doesn't compress, but the format specifier is
kernel-standard, so use it.

Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 57cc71bc

net/core/pktgen.c

+13 −96
Original line number Diff line number Diff line
@@ -449,7 +449,6 @@ static void pktgen_stop(struct pktgen_thread *t); 
static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);



static unsigned int scan_ip6(const char *s, char ip[16]);

static unsigned int fmt_ip6(char *s, const char ip[16]);



/* Module parameters, defaults. */

static int pg_count_d __read_mostly = 1000;
@@ -556,21 +555,13 @@ static int pktgen_if_show(struct seq_file *seq, void *v) 
			   pkt_dev->skb_priority);



	if (pkt_dev->flags & F_IPV6) {

		char b1[128], b2[128], b3[128];

		fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);

		fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);

		fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);

		seq_printf(seq,

			   "     saddr: %s  min_saddr: %s  max_saddr: %s\n", b1,

			   b2, b3);



		fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);

		fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);

		fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);

		seq_printf(seq,

			   "     daddr: %s  min_daddr: %s  max_daddr: %s\n", b1,

			   b2, b3);



			   "     saddr: %pI6c  min_saddr: %pI6c  max_saddr: %pI6c\n"

			   "     daddr: %pI6c  min_daddr: %pI6c  max_daddr: %pI6c\n",

			   &pkt_dev->in6_saddr,

			   &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,

			   &pkt_dev->in6_daddr,

			   &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);

	} else {

		seq_printf(seq,

			   "     dst_min: %s  dst_max: %s\n",
@@ -706,10 +697,9 @@ static int pktgen_if_show(struct seq_file *seq, void *v) 
		   pkt_dev->cur_src_mac_offset);



	if (pkt_dev->flags & F_IPV6) {

		char b1[128], b2[128];

		fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);

		fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);

		seq_printf(seq, "     cur_saddr: %s  cur_daddr: %s\n", b2, b1);

		seq_printf(seq, "     cur_saddr: %pI6c  cur_daddr: %pI6c\n",

				&pkt_dev->cur_in6_saddr,

				&pkt_dev->cur_in6_daddr);

	} else

		seq_printf(seq, "     cur_saddr: 0x%x  cur_daddr: 0x%x\n",

			   pkt_dev->cur_saddr, pkt_dev->cur_daddr);
@@ -1309,7 +1299,7 @@ static ssize_t pktgen_if_write(struct file *file, 
		buf[len] = 0;



		scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);

		fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);

		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);



		ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
@@ -1332,7 +1322,7 @@ static ssize_t pktgen_if_write(struct file *file, 
		buf[len] = 0;



		scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);

		fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);

		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);



		ipv6_addr_copy(&pkt_dev->cur_in6_daddr,

			       &pkt_dev->min_in6_daddr);
@@ -1355,7 +1345,7 @@ static ssize_t pktgen_if_write(struct file *file, 
		buf[len] = 0;



		scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);

		fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);

		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);



		if (debug)

			printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
@@ -1376,7 +1366,7 @@ static ssize_t pktgen_if_write(struct file *file, 
		buf[len] = 0;



		scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);

		fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);

		snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);



		ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
@@ -2898,79 +2888,6 @@ static unsigned int scan_ip6(const char *s, char ip[16]) 
	return len;

}



static char tohex(char hexdigit)

{

	return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';

}



static int fmt_xlong(char *s, unsigned int i)

{

	char *bak = s;

	*s = tohex((i >> 12) & 0xf);

	if (s != bak || *s != '0')

		++s;

	*s = tohex((i >> 8) & 0xf);

	if (s != bak || *s != '0')

		++s;

	*s = tohex((i >> 4) & 0xf);

	if (s != bak || *s != '0')

		++s;

	*s = tohex(i & 0xf);

	return s - bak + 1;

}



static unsigned int fmt_ip6(char *s, const char ip[16])

{

	unsigned int len;

	unsigned int i;

	unsigned int temp;

	unsigned int compressing;

	int j;



	len = 0;

	compressing = 0;

	for (j = 0; j < 16; j += 2) {



#ifdef V4MAPPEDPREFIX

		if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {

			inet_ntoa_r(*(struct in_addr *)(ip + 12), s);

			temp = strlen(s);

			return len + temp;

		}

#endif

		temp = ((unsigned long)(unsigned char)ip[j] << 8) +

		    (unsigned long)(unsigned char)ip[j + 1];

		if (temp == 0) {

			if (!compressing) {

				compressing = 1;

				if (j == 0) {

					*s++ = ':';

					++len;

				}

			}

		} else {

			if (compressing) {

				compressing = 0;

				*s++ = ':';

				++len;

			}

			i = fmt_xlong(s, temp);

			len += i;

			s += i;

			if (j < 14) {

				*s++ = ':';

				++len;

			}

		}

	}

	if (compressing) {

		*s++ = ':';

		++len;

	}

	*s = 0;

	return len;

}



static struct sk_buff *fill_packet_ipv6(struct net_device *odev,

					struct pktgen_dev *pkt_dev)

{