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| author | Philip Balister <philip@opensdr.com> | 2011-03-17 05:38:32 -0700 |
|---|---|---|
| committer | Philip Balister <philip@opensdr.com> | 2011-03-17 05:38:32 -0700 |
| commit | 31953ec55d038d75cfe9307bd38abdc953904b07 (patch) | |
| tree | 22912967b2edc46bce0db66eca06f93d2b1f5001 /host/usrp_e_utils | |
| parent | a57310606c581addc5bafdb9c645eb7b46cb4a79 (diff) | |
| download | uhd-31953ec55d038d75cfe9307bd38abdc953904b07.tar.gz uhd-31953ec55d038d75cfe9307bd38abdc953904b07.tar.bz2 uhd-31953ec55d038d75cfe9307bd38abdc953904b07.zip | |
usrp_e : Check packet length received from FPGA in case of corruption.
If the packet length in invalid, do not calculate the checksum to avoid
segfaulting.
Diffstat (limited to 'host/usrp_e_utils')
| -rw-r--r-- | host/usrp_e_utils/usrp-e-loopback.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/host/usrp_e_utils/usrp-e-loopback.c b/host/usrp_e_utils/usrp-e-loopback.c index 78e2b5d16..0bd3d3100 100644 --- a/host/usrp_e_utils/usrp-e-loopback.c +++ b/host/usrp_e_utils/usrp-e-loopback.c @@ -38,11 +38,15 @@ static int calc_checksum(struct pkt *p) i = 0; sum = 0; - for (i=0; i < p->len; i++) - sum += p->data[i]; - - sum += p->seq_num; - sum += p->len; + if (p->len < 1016) { + for (i=0; i < p->len; i++) + sum += p->data[i]; + + sum += p->seq_num; + sum += p->len; + } else { + printf("Bad packet length = %d received.\n", p->len); + } return sum; } |