diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/pktgen.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 294bfcf0ce0e..890be1b4877e 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -323,6 +323,10 @@ struct pktgen_dev { struct in6_addr max_in6_daddr; struct in6_addr min_in6_saddr; struct in6_addr max_in6_saddr; + u64 max_in6_h; + u64 max_in6_l; + u64 min_in6_h; + u64 min_in6_l; /* If we're doing ranges, random or incremental, then this * defines the min/max for those ranges. @@ -1355,6 +1359,59 @@ static ssize_t pktgen_if_write(struct file *file, sprintf(pg_result, "OK: dst6_max=%s", buf); return count; } + if (!strcmp(name, "src6_min")) { + len = strn_len(&user_buffer[i], sizeof(buf) - 1); + if (len < 0) + return len; + + pkt_dev->flags |= F_IPV6; + + if (copy_from_user(buf, &user_buffer[i], len)) + return -EFAULT; + buf[len] = 0; + + in6_pton(buf, -1, pkt_dev->min_in6_saddr.s6_addr, -1, NULL); + snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_saddr); + + memcpy(&pkt_dev->min_in6_h, pkt_dev->min_in6_saddr.s6_addr, 8); + memcpy(&pkt_dev->min_in6_l, pkt_dev->min_in6_saddr.s6_addr + 8, 8); + pkt_dev->min_in6_h = be64_to_cpu(pkt_dev->min_in6_h); + pkt_dev->min_in6_l = be64_to_cpu(pkt_dev->min_in6_l); + + pkt_dev->cur_in6_saddr = pkt_dev->min_in6_saddr; + if (debug) + pr_debug("src6_min set to: %s\n", buf); + + i += len; + sprintf(pg_result, "OK: src6_min=%s", buf); + return count; + } + if (!strcmp(name, "src6_max")) { + len = strn_len(&user_buffer[i], sizeof(buf) - 1); + if (len < 0) + return len; + + pkt_dev->flags |= F_IPV6; + + if (copy_from_user(buf, &user_buffer[i], len)) + return -EFAULT; + buf[len] = 0; + + in6_pton(buf, -1, pkt_dev->max_in6_saddr.s6_addr, -1, NULL); + snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_saddr); + + memcpy(&pkt_dev->max_in6_h, pkt_dev->max_in6_saddr.s6_addr, 8); + memcpy(&pkt_dev->max_in6_l, pkt_dev->max_in6_saddr.s6_addr + 8, 8); + pkt_dev->max_in6_h = be64_to_cpu(pkt_dev->max_in6_h); + pkt_dev->max_in6_l = be64_to_cpu(pkt_dev->max_in6_l); + + if (debug) + pr_debug("src6_max set to: %s\n", buf); + + i += len; + sprintf(pg_result, "OK: src6_max=%s", buf); + return count; + } if (!strcmp(name, "src6")) { len = strn_len(&user_buffer[i], sizeof(buf) - 1); if (len < 0) @@ -2286,6 +2343,45 @@ static void set_cur_queue_map(struct pktgen_dev *pkt_dev) pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; } +/* generate ipv6 source addr */ +static void set_src_in6_addr(struct pktgen_dev *pkt_dev) +{ + u64 min6, max6, rand, i; + struct in6_addr addr6; + __be64 addr_l, *t; + + min6 = pkt_dev->min_in6_l; + max6 = pkt_dev->max_in6_l; + + /* only generate source address in least significant 64 bits range + * most significant 64 bits must be equal + */ + if (pkt_dev->max_in6_h != pkt_dev->min_in6_h || min6 >= max6) + return; + + addr6 = pkt_dev->min_in6_saddr; + t = (__be64 *)addr6.s6_addr + 1; + + if (pkt_dev->flags & F_IPSRC_RND) { + do { + prandom_bytes(&rand, sizeof(rand)); + rand = rand % (max6 - min6) + min6; + addr_l = cpu_to_be64(rand); + memcpy(t, &addr_l, 8); + } while (ipv6_addr_loopback(&addr6) || + ipv6_addr_v4mapped(&addr6) || + ipv6_addr_is_multicast(&addr6)); + } else { + addr6 = pkt_dev->cur_in6_saddr; + i = be64_to_cpu(*t); + if (++i > max6) + i = min6; + addr_l = cpu_to_be64(i); + memcpy(t, &addr_l, 8); + } + pkt_dev->cur_in6_saddr = addr6; +} + /* Increment/randomize headers according to flags and current values * for IP src/dest, UDP src/dst port, MAC-Addr src/dst */ @@ -2454,6 +2550,8 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev) } } else { /* IPV6 * */ + set_src_in6_addr(pkt_dev); + if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { int i; |