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Message-Id: <1515778774-24173-6-git-send-email-serhe.popovych@gmail.com>
Date: Fri, 12 Jan 2018 19:39:30 +0200
From: Serhey Popovych <serhe.popovych@...il.com>
To: netdev@...r.kernel.org
Subject: [PATCH iproute2 5/9] ip/tunnel: Use print_string() and simplify encap option printing
Use print_string() instead of fputs() and fprintf() to
print encapsulation for !is_json_context().
Introduce and use tnl_encap_optstr() to format encapsulation
option string according to tempate and given values to avoid
code duplication and simplify it.
Signed-off-by: Serhey Popovych <serhe.popovych@...il.com>
---
ip/link_gre.c | 54 +++++++++++++++++++++---------------------------------
ip/link_gre6.c | 46 ++++++++++++++++++++++------------------------
ip/link_ip6tnl.c | 40 +++++++++++++++++++---------------------
ip/link_iptnl.c | 52 ++++++++++++++++++++++------------------------------
ip/tunnel.c | 24 ++++++++++++++++++++++++
ip/tunnel.h | 1 +
6 files changed, 109 insertions(+), 108 deletions(-)
diff --git a/ip/link_gre.c b/ip/link_gre.c
index 2ae2194..b70f73b 100644
--- a/ip/link_gre.c
+++ b/ip/link_gre.c
@@ -491,50 +491,38 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
}
if (is_json_context()) {
- print_uint(PRINT_JSON,
- "sport",
- NULL,
- sport ? ntohs(sport) : 0);
+ print_uint(PRINT_JSON, "sport", NULL, ntohs(sport));
print_uint(PRINT_JSON, "dport", NULL, ntohs(dport));
-
- print_bool(PRINT_JSON,
- "csum",
- NULL,
+ print_bool(PRINT_JSON, "csum", NULL,
flags & TUNNEL_ENCAP_FLAG_CSUM);
-
- print_bool(PRINT_JSON,
- "csum6",
- NULL,
+ print_bool(PRINT_JSON, "csum6", NULL,
flags & TUNNEL_ENCAP_FLAG_CSUM6);
-
- print_bool(PRINT_JSON,
- "remcsum",
- NULL,
+ print_bool(PRINT_JSON, "remcsum", NULL,
flags & TUNNEL_ENCAP_FLAG_REMCSUM);
close_json_object();
} else {
- if (sport == 0)
- fputs("encap-sport auto ", f);
- else
- fprintf(f, "encap-sport %u", ntohs(sport));
+ int t;
- fprintf(f, "encap-dport %u ", ntohs(dport));
+ t = sport ? ntohs(sport) + 1 : 0;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("sport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM)
- fputs("encap-csum ", f);
- else
- fputs("noencap-csum ", f);
+ t = ntohs(dport) + 1;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("dport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
- fputs("encap-csum6 ", f);
- else
- fputs("noencap-csum6 ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum", t, -1));
- if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
- fputs("encap-remcsum ", f);
- else
- fputs("noencap-remcsum ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM6;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum6", t, -1));
+
+ t = flags & TUNNEL_ENCAP_FLAG_REMCSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("remcsum", t, -1));
}
}
}
diff --git a/ip/link_gre6.c b/ip/link_gre6.c
index 9576354..41180bb 100644
--- a/ip/link_gre6.c
+++ b/ip/link_gre6.c
@@ -538,40 +538,38 @@ static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
}
if (is_json_context()) {
- print_uint(PRINT_JSON,
- "sport",
- NULL,
- sport ? ntohs(sport) : 0);
+ print_uint(PRINT_JSON, "sport", NULL, ntohs(sport));
print_uint(PRINT_JSON, "dport", NULL, ntohs(dport));
print_bool(PRINT_JSON, "csum", NULL,
- flags & TUNNEL_ENCAP_FLAG_CSUM);
+ flags & TUNNEL_ENCAP_FLAG_CSUM);
print_bool(PRINT_JSON, "csum6", NULL,
- flags & TUNNEL_ENCAP_FLAG_CSUM6);
+ flags & TUNNEL_ENCAP_FLAG_CSUM6);
print_bool(PRINT_JSON, "remcsum", NULL,
- flags & TUNNEL_ENCAP_FLAG_REMCSUM);
+ flags & TUNNEL_ENCAP_FLAG_REMCSUM);
+
close_json_object();
} else {
- if (sport == 0)
- fputs("encap-sport auto ", f);
- else
- fprintf(f, "encap-sport %u", ntohs(sport));
+ int t;
- fprintf(f, "encap-dport %u ", ntohs(dport));
+ t = sport ? ntohs(sport) + 1 : 0;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("sport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM)
- fputs("encap-csum ", f);
- else
- fputs("noencap-csum ", f);
+ t = ntohs(dport) + 1;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("dport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
- fputs("encap-csum6 ", f);
- else
- fputs("noencap-csum6 ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum", t, -1));
- if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
- fputs("encap-remcsum ", f);
- else
- fputs("noencap-remcsum ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM6;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum6", t, -1));
+
+ t = flags & TUNNEL_ENCAP_FLAG_REMCSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("remcsum", t, -1));
}
}
}
diff --git a/ip/link_ip6tnl.c b/ip/link_ip6tnl.c
index 9594c3e..aa6f6fa 100644
--- a/ip/link_ip6tnl.c
+++ b/ip/link_ip6tnl.c
@@ -479,10 +479,7 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb
}
if (is_json_context()) {
- print_uint(PRINT_JSON,
- "sport",
- NULL,
- sport ? ntohs(sport) : 0);
+ print_uint(PRINT_JSON, "sport", NULL, ntohs(sport));
print_uint(PRINT_JSON, "dport", NULL, ntohs(dport));
print_bool(PRINT_JSON, "csum", NULL,
flags & TUNNEL_ENCAP_FLAG_CSUM);
@@ -490,29 +487,30 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb
flags & TUNNEL_ENCAP_FLAG_CSUM6);
print_bool(PRINT_JSON, "remcsum", NULL,
flags & TUNNEL_ENCAP_FLAG_REMCSUM);
+
close_json_object();
} else {
- if (sport == 0)
- fputs("encap-sport auto ", f);
- else
- fprintf(f, "encap-sport %u", ntohs(sport));
+ int t;
- fprintf(f, "encap-dport %u ", ntohs(dport));
+ t = sport ? ntohs(sport) + 1 : 0;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("sport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM)
- fputs("encap-csum ", f);
- else
- fputs("noencap-csum ", f);
+ t = ntohs(dport) + 1;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("dport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
- fputs("encap-csum6 ", f);
- else
- fputs("noencap-csum6 ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum", t, -1));
- if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
- fputs("encap-remcsum ", f);
- else
- fputs("noencap-remcsum ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM6;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum6", t, -1));
+
+ t = flags & TUNNEL_ENCAP_FLAG_REMCSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("remcsum", t, -1));
}
}
}
diff --git a/ip/link_iptnl.c b/ip/link_iptnl.c
index fcb0795..83a524f 100644
--- a/ip/link_iptnl.c
+++ b/ip/link_iptnl.c
@@ -510,46 +510,38 @@ static void iptunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[
}
if (is_json_context()) {
- print_uint(PRINT_JSON,
- "sport",
- NULL,
- sport ? ntohs(sport) : 0);
+ print_uint(PRINT_JSON, "sport", NULL, ntohs(sport));
print_uint(PRINT_JSON, "dport", NULL, ntohs(dport));
- print_bool(PRINT_JSON,
- "csum",
- NULL,
+ print_bool(PRINT_JSON, "csum", NULL,
flags & TUNNEL_ENCAP_FLAG_CSUM);
- print_bool(PRINT_JSON,
- "csum6",
- NULL,
+ print_bool(PRINT_JSON, "csum6", NULL,
flags & TUNNEL_ENCAP_FLAG_CSUM6);
- print_bool(PRINT_JSON,
- "remcsum",
- NULL,
+ print_bool(PRINT_JSON, "remcsum", NULL,
flags & TUNNEL_ENCAP_FLAG_REMCSUM);
+
close_json_object();
} else {
- if (sport == 0)
- fputs("encap-sport auto ", f);
- else
- fprintf(f, "encap-sport %u", ntohs(sport));
+ int t;
- fprintf(f, "encap-dport %u ", ntohs(dport));
+ t = sport ? ntohs(sport) + 1 : 0;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("sport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM)
- fputs("encap-csum ", f);
- else
- fputs("noencap-csum ", f);
+ t = ntohs(dport) + 1;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("dport", 1, t));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
- fputs("encap-csum6 ", f);
- else
- fputs("noencap-csum6 ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum", t, -1));
- if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
- fputs("encap-remcsum ", f);
- else
- fputs("noencap-remcsum ", f);
+ t = flags & TUNNEL_ENCAP_FLAG_CSUM6;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("csum6", t, -1));
+
+ t = flags & TUNNEL_ENCAP_FLAG_REMCSUM;
+ print_string(PRINT_FP, NULL, "%s",
+ tnl_encap_optstr("remcsum", t, -1));
}
}
}
diff --git a/ip/tunnel.c b/ip/tunnel.c
index f860103..1305e12 100644
--- a/ip/tunnel.c
+++ b/ip/tunnel.c
@@ -200,6 +200,30 @@ __be32 tnl_parse_key(const char *name, const char *key)
return htonl(uval);
}
+const char *tnl_encap_optstr(const char *name, int enabled, int port)
+{
+ static const char ne[][sizeof("no")] = {
+ [0] = "no",
+ [1] = "",
+ };
+ static char buf[32];
+ char b1[16];
+ const char *val;
+
+ if (!port) {
+ val = "auto";
+ } else if (port < 0) {
+ val = "";
+ } else {
+ snprintf(b1, sizeof(b1), "%u", port - 1);
+ val = b1;
+ }
+
+ snprintf(buf, sizeof(buf), "%sencap-%s %s", ne[!!enabled], name, val);
+ return buf;
+}
+
+
/* tnl_print_stats - print tunnel statistics
*
* @buf - tunnel interface's line in /proc/net/dev,
diff --git a/ip/tunnel.h b/ip/tunnel.h
index 9a03c0d..7af3592 100644
--- a/ip/tunnel.h
+++ b/ip/tunnel.h
@@ -32,6 +32,7 @@ int tnl_prl_ioctl(int cmd, const char *name, void *p);
int tnl_6rd_ioctl(int cmd, const char *name, void *p);
int tnl_ioctl_get_6rd(const char *name, void *p);
__be32 tnl_parse_key(const char *name, const char *key);
+const char *tnl_encap_optstr(const char *name, int enabled, int port);
void tnl_print_stats(const char *buf);
#endif
--
1.7.10.4
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