src/network/tc/teql.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "macro.h"
   4 #include "netlink-util.h"
   5 #include "parse-util.h"
   6 #include "stdio-util.h"
   7 #include "string-util.h"
   8 #include "teql.h"
   9
  10 static int trivial_link_equalizer_fill_tca_kind(Link *link, QDisc *qdisc, sd_netlink_message *req) {
  11         char kind[STRLEN("teql") + DECIMAL_STR_MAX(unsigned)];
  12         TrivialLinkEqualizer *teql;
  13         int r;
  14
  15         assert(link);
  16         assert(qdisc);
  17         assert(req);
  18
  19         teql = TEQL(qdisc);
  20
  21         xsprintf(kind, "teql%u", teql->id);
  22         r = sd_netlink_message_append_string(req, TCA_KIND, kind);
  23         if (r < 0)
  24                 return log_link_error_errno(link, r, "Could not append TCA_KIND attribute: %m");
  25
  26         return 0;
  27 }
  28
  29 const QDiscVTable teql_vtable = {
  30         .object_size = sizeof(TrivialLinkEqualizer),
  31         .fill_tca_kind = trivial_link_equalizer_fill_tca_kind,
  32 };
  33
  34 int config_parse_trivial_link_equalizer_id(
  35                 const char *unit,
  36                 const char *filename,
  37                 unsigned line,
  38                 const char *section,
  39                 unsigned section_line,
  40                 const char *lvalue,
  41                 int ltype,
  42                 const char *rvalue,
  43                 void *data,
  44                 void *userdata) {
  45
  46         _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
  47         TrivialLinkEqualizer *teql;
  48         Network *network = data;
  49         unsigned id;
  50         int r;
  51
  52         assert(filename);
  53         assert(lvalue);
  54         assert(rvalue);
  55         assert(data);
  56
  57         r = qdisc_new_static(QDISC_KIND_TEQL, network, filename, section_line, &qdisc);
  58         if (r == -ENOMEM)
  59                 return log_oom();
  60         if (r < 0) {
  61                 log_syntax(unit, LOG_WARNING, filename, line, r,
  62                            "More than one kind of queueing discipline, ignoring assignment: %m");
  63                 return 0;
  64         }
  65
  66         teql = TEQL(qdisc);
  67
  68         if (isempty(rvalue)) {
  69                 teql->id = 0;
  70
  71                 qdisc = NULL;
  72                 return 0;
  73         }
  74
  75         r = safe_atou(rvalue, &id);
  76         if (r < 0) {
  77                 log_syntax(unit, LOG_WARNING, filename, line, r,
  78                            "Failed to parse '%s=', ignoring assignment: %s",
  79                            lvalue, rvalue);
  80                 return 0;
  81         }
  82         if (id > INT_MAX)
  83                 log_syntax(unit, LOG_WARNING, filename, line, 0,
  84                            "'%s=' is too large, ignoring assignment: %s",
  85                            lvalue, rvalue);
  86
  87         teql->id = id;
  88
  89         qdisc = NULL;
  90         return 0;
  91 }